Pep Club SMS that wount stop

I have joined the Pep Club and now I cannot get them away from me, I have spoken to Ntole (16/2/2015) , Dean (26/2/2015), Nomelo (9/3/2015) and Amanda (12/03/2015) @ ***. All promise me to cancel my subscriptio ,I get sms at 2 in the morning of entries in Vodacom/Pep - free entries into millionaires lucky draws. And I cannot get rid of them, DO NOT JOIN PEP CLUB.