Verified: 9 March 2026 05:40 pm UK Time
Industry: Telecommunications & Broadband
Jurisdiction: United Kingdom
Primary Regulator: Ofcom
Important Safety Warning: Beware of fake customer service numbers on search engines. Only use official channels. Scammers frequently buy ads to promote fraudulent phone numbers. Plusnet staff will never ask for your account PIN, your online portal password, or ask you to download remote desktop software to “fix your router” over the phone.
Level 1: Customer Support (Initial Complaint)
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How to complain: You can raise a complaint directly through the Help Assistant in your online account, or by calling/texting their official customer service routing numbers.
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Plusnet Customer Service: 0330 1239 123
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Text Support (Fastest routing): Text HELP (for broadband) or PHONE (for home phone) to 07800008121. This runs an automated line test and triggers a callback from a UK agent within 30 minutes.
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Source Verification Note: Plusnet Complaints Code of Practice
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Availability: Telephone and text support are available Monday to Sunday from 8:00 AM to 8:00 PM (UK Time).
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Timeline: Plusnet aims to resolve complaints on the first contact. If they cannot, they will assign a ticket number for investigation. (Note: Under Ofcom rules, if a Plusnet/Openreach engineer misses an appointment, or a broadband repair/installation is delayed beyond 2 working days, they must issue automatic compensation credits to your bill).
Level 2: Formal Corporate Escalation (Notice of Dispute)
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Who to contact: If standard customer service cannot resolve the issue, you must formally escalate it to their central correspondence team. Send a written letter detailing your account username, a timeline of the issue, and your desired resolution. You must explicitly request a “Deadlock Letter” if they refuse your proposed resolution. Sending this via Royal Mail Signed For is highly recommended to prove receipt.
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Complaints Address: Plusnet Plc, Endeavour, Sheffield Digital Campus, 1a Concourse Way, Sheffield, S1 2BJ
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Timeline: Under Ofcom regulations, Plusnet has a maximum of 8 weeks to issue a final resolution or a Deadlock Letter.
Level 3: Regulatory Authority (Government Ombudsman)
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Authority: Communications Ombudsman (Note: Plusnet does not use CISAS).
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Portal/Contact: The Communications Ombudsman is the Ofcom-approved, free dispute resolution service for Plusnet complaints. You can submit a complaint online or by email:
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Website: commsombudsman.org
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Email: enquiry@commsombudsman.org
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Phone: 0330 440 1614
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Timeline (CRITICAL): You can only refer your complaint to the Ombudsman after you receive a Deadlock Letter from Plusnet, OR if 8 weeks have passed since your initial complaint without a resolution. You must escalate the complaint to the Ombudsman within 12 months of receiving your Deadlock Letter.
Level 4: Legal Action (Final Step)
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Pre-Litigation: Before commencing legal proceedings, UK legal protocols require you to send a formal “Letter Before Action” (LBA) to Plusnet’s corporate legal headquarters. This letter must outline your claim, the exact legal or contractual breach, the evidence, and the financial remedy you seek, giving them a final 14 to 30 days to settle.
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Legal Address: Plusnet Plc, Endeavour, Sheffield Digital Campus, 1a Concourse Way, Sheffield, S1 2BJ
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Court: If the LBA fails and the Ombudsman cannot resolve it, you can file a lawsuit. For financial claims up to £10,000 in England and Wales, you can use the Money Claim Online (MCOL) portal to enter the Small Claims Track. For complex claims, you will likely need to instruct a solicitor and proceed to the County Court.
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Source Verification: Make a court claim for money (GOV.UK)
Community Action: Is Plusnet still ignoring your broadband dropout issue or billing dispute? Reply below (do not share your passwords, full account numbers, or PINs), and our community will point you to the right Communications Ombudsman complaint templates!