Mrp mobile is bad news

I received a call from mrp mobile consultant. She said they will give me R120 air time for R100 and it's a prepaid, no monthly obligation. I received the parkage few days later and the papers said I will pay R100 for 12 months. I called them immediately, told them I want to returned it. They said I should just destroy it, they will cancel it and I won't be changed anything if I don't use it. After a week my phone was off, I called my network they told me that my number was ported by mrp mobile. I called mrp mobile and asked why they ported my number after I cancelled with them. I spend 2 days without a phone waiting for them to port my number back. My number was ported back to my network but I lost my data airtime everything. Weeks later I received a statement saying I owe mrp Mobile. How could they expect me to pay for something I never used, I won't pay for that after they have caused me so much stress. I wouldn't advice anyone to listen to mrp mobile consultants, they deceive people.