Trai — hp-bnkscr keeps sending sms

Website:

www.mymoneykarma.com

I never opted for sms from that aweful site. I don't even have a credit card, which makes these sms completely useless to me. But, these people keep sending me those sms. No one sends me sms this frequently with the same reason. I tried using that ndnc service to file a complaint. I used the sms syntax as defined in the website. I waited for 2days to get a positive reply about the status of that complaint. But, no, they say that my complaint could not be resolved. Even if i make those sms stop from that sender hp-bnkscr, i'm worried that they'll use another sending address to send those sms again.