GTPL — slow and unstable speeds of broadband

Address:	Morbi, Gujarat, 363641
Website:	www.gtpl.net

I have 50 mbps plan but i get download speeds around 10-15 mbps and sometimes even goes down to like 7-8 mbps upload is fine getting around 22-25mbps. At night it runs well i get 47mbps which is fine but during daytime speed is very unstable. I complained to gtpl about 3 to 4 times but they never resolved it. They just say restart the router or operator will say i'm resetting your connection from here and tell me to check speeds then they said our technician will come in 24 hours. But no one came. They didn't fix anything. Worst customer service ever.