Hathway Cable & Datacom — irritating sms every day

You people first concentrate on providing proper service not annoying messages every day. I have called several times not to send sms and is very frustrating.
I have every evidence that customer care person promised me many times that they put my number in dnd. But still i am getting sms every day.

I will have to file case if you still hold my account details and send sms again. Mind it.
Account number : [protected]
Another message be ready to face legal consequences.