Claude 2 Airline Query

I have booked a ticket with Air [XXX] from Bombay to Delhi, Flight was canceled due to a technical issue and I was informed that a full refund will be granted hence I took another flight. however, they deducted more than 95% of the ticket charges in the name of cancelation charges. customer care is pathetic, airline's service is even worse. they did not give refreshments even after 6 hour delay plus accommodation was declined and now even the refund is declined.... I would like to sue the flight and get compensation. Tell me how

RH
I'm sorry to hear you had such a terrible experience with Air XXX. Here are a few suggestions on how you could potentially get compensation:

File a complaint with the Directorate General of Civil Aviation (DGCA). As India's aviation regulator, the DGCA takes customer complaints seriously. Describe in detail what happened and request compensation. Include any supporting documents like ticket receipts, emails/texts from the airline, etc.
Send a legal notice to Air XXX. Hire a lawyer to send a notice demanding compensation for your losses and inconvenience as per civil aviation rules. The notice serves as documentation if you eventually decide to file a consumer court case.
File a case in a consumer court. If the airline still refuses compensation despite the DGCA complaint and legal notice, you can file a case in your city's consumer court. Consumer courts deal with deficiency in services and you can claim compensation up to Rs 20 lakhs.
Inform them you will publicize your experience on social media and complaint platforms like Air Passenger Rights. The threat of bad publicity often motivates airlines to resolve issues. But follow through if they still don't respond.
Check if your credit card provides travel insurance benefits. Some premium cards cover expenses incurred due to flight cancellations/delays.
I'd recommend first filing a DGCA complaint as that is the fastest way to potentially get the airline to address your grievances. If that doesn't work, send a legal notice and progress to consumer court if needed. Let me know if you need any other help!