Annoying service from one2one

I got a call from one2one consultant towards end of Jan 2019 ,they were going to give me 1G of data every month on R39 per month of which it was going to be billed on my Foschin account .What made me angry they didn't even tell me about changing my prepaid number to contract only if i knew i was not going to accept what they offered me.I only released when i called MTN that my number has been changed to contract by one2one. I decided to cancel their contract ,i called them beginning of Feb for a cancellation and they told me that my sim will be deactivated on the 6 of March of which they didn't. On the 18 of March my sim was deactivated and they told me that it will take 24 to 48 working hours to be activated back to prepaid(that 6 working days)Surprisingly each time if i am making a follow up they keep on telling me one and the same story that MTN is experiencing some problems and they is no response from MTN.I am really tired now of these people,i dont have a phone from the 18 till today .I even regret why did i agree on their service.Bottom line i am tired and i need my sim card back on prepaid.Really this is disgusting ,i am regretting. Kindly assist.