Consumer Redressal

I have a tata photon max wifi with 999 plan. Recently I am getting horrible speed (20-40kbps) all the time of the day. My Adress details is Amrakunja Housing Complex Block-Sinduri, Flat no -3/2 51 Sarat Chandra Bose Road Kolkata 700164 I just lodged a complaint today against this (complaint number : 476151271) and they promised that the issue will be resolved by 3 pm this day and surprisingly they have marked the issue as resolved without any confirmation from my side whether the issue is resolved properly or not. Where the issue is not at all resolved but worse.