To lodge your complaint regarding the persistent unresolved mechanical issues with your XUV300 (MH36Z7005) and the service negligence at Provincial Mahindra Automotive, Nagpur, please contact Mahindra Customer Care at 1800-209-6006 or email customercare@mahindra.com immediately. Given the repeated repair failures and billing disputes, explicitly request an inspection by the Regional Service Manager.
If the issue remains unresolved, you can file a formal grievance via the National Consumer Helpline at consumerhelpline.gov.in or call 1915.