Since you paid ₹300 for a Warangal Depot bus seat but had to stand for the journey, you are entitled to proper accommodation.
To resolve this, please contact TSRTC Customer Care at +914069440000 / 04023450033. You can also raise a complaint at https://www.tsrtc.telangana.gov.in/ under the grievance section. Request a refund or proper seating arrangement in the next available bus. To make your complaint online, follow these instructions:
Further, you may lodge a complaint with the Regional Manager of Warangal.