Reliance Communications — reliance communications rcom mobile service stopped in nov 2017 but bills keep coming even in jan 2018

Address:

Mumbai City, Maharashtra, 400601

Rcom automatically stopped all the services in nov 2017 of rcom announcing the discontinuation of service. I had gone in november to the reliance store to disconnect the number but they told me it would get automatically deactivated. I didn't wanted to port out the number and thought number would get deactivated. But still getting bill on dec 2017 as well as jan 2017. I have paid the bills though i havent made a single call or message. Also sent a mail to them asking to deactivate the number. There is no usage but still bill is generating for postpaid sim and asking to pay the rent plus tax.

Tried contacting customer care, also sent email but no response. Don't know what to do further. Please help.