Excell Broadband — Network is very slow at nights and mornings also

I took this excel broadband network on 09/10/2020 at Eluru, westgodavari district. Andhrapradesh. Said as 50mbps speed but, sometimes not even 5or 7mbps. After receiving complaints they are sending some people who fit for checking speed only. Not even they are technically enough to hike the speed. Just now also they did the same. Hence I want this excel network be deactivated and my money should be given back