No resoponse from Rain

I've ordered RAIN 5G uncapped premium and received the router and SIM on 24 Nov 2020. After moving the router all around my property, including on top of the roof, I could not get proper reception. After 3 days decided to cancel. I did the cancellation on MyRain and received email from Rain CeC asking if I would want to cancel at the end of the month or immediately. I requested immediate cancellation. Thereafter I did not receive any response from Rain and I've been sending follow up emails on 30 Nov and 1 Dec. The router still shows active on MyRain.