Hathway / Gujarat Telelink [GTPL] — broadband services..net not working neither they are giving back money

Address:

Rajkot, Gujarat, 360002

I am using gtpl broadband connection. Taken the plan of 10mps 1200gb for 12 months, since nov 17, since than the connection is disconnect evwry now than in 15 days.. More on that i have never get 10mbps speed, i do register a complaint
And msg received within a week thay complaint is resolved, but actually it didn't. Now since 4 days i am asking them to resolve this issue forever and return the money for remaining period. I have sent an email for that too. But no one is replying for that. Instead of that they are saying issue will be resolved sortly... I don't understand what to do now. Please help me.