Reliance Jio Infocomm — very slow internet and bad customer care

I am arpit srivastava from unnao, uttar pradesh. I have been a old customer for jio but whenever i call them for their slow internet speed they cut my phone without any proper conversation. My jio number is [protected]. It's very frustrating as they ask for 500 per 3 months in which i must get 2 gb per day but due to their slowest speed i can only use less than 1 gb, nothing get downloaded, it take hours to download a small file of 50 mb. Kindly do something against them or they will keep exploiting their customers.