Hathway Cable & Datacom — daily spam messages and calls

Address:

New Delhi, Delhi, 110017

Sir
I have disconnected my hathway connection long before more than 1 year and i recieve calls and sms daily on my phone number i have made them clear i dont want spam sms and calls two times but they regularly call me with different numbers and send me sms plz resolve the issue for the same the account id is [protected].
And the message which comes is

Today offer ! pls reactivate Your Ac No, [protected] & Get 150 mbps unlimited Monthly package @ Rs-550 and 3+1 Month @ Rs-1910.Call [protected]
I dont want to receive the spam sms and calls