Hathway — Deactivate my hathway account

I stopped Hathway connection in Bangalore as I shifted to Hyderabad almost 8 years back still getting calls for renewal, Each time I requested them to remove my number&account from the database. But still, I am getting calls every day. This is not my only job to do every day and I cannot block all the calls, as I am receiving calls from new numbers each time. I request @Hathway to remove my number and I don't want to receive any more calls. I am done. Pradeep A below are my account details