Hathway / Gujarat Telelink [GTPL] — poor broadband service, most of the time it's not working

I have taken 50 mbps plan nad paid for a full year. However most of the time either broadband is not working or even if it works speed is as low as 1 - 5 mbps. Very few time it works with 50 mbps speed. Already complained to customer compliant but after compliant it starts working for few hours and then again star giving trouble. Main problem is gtpl dont have any service office in maharashtra everything is been operated from customer service at gujarat and they every time i complain they have only one answer we will resolve it in 24hrs.