mobile number used without authority

I have a stalker on my case because MTN has my number on their dating site according to this stalker. This guy has been calling me numerous times on my cell phone, he confirmed that he found my number on the MTN Dating site. I told him to stop calling me because I was not on the site & this was the 1st time(10-01-2016) i even heard of the site. He then send me a text via whatsapp, which I did not entertain & blocked him, he called me again today. I did not even want to hear what his name was, his number is ***. I called MTN & spoke to Sihle Khumalo, he told me that there was no escalation process, he referred me to the SAPS because i had initiated that & after I took down his details, he hung up & never even offered further assistance. As a prepaid customer I would like to know who put my number on that site & I would like to have it removed, this is appalling because the next thing you know my number will be on a **** site