SIMCARD DELIVERY AND PAYMENTS

Mobile plus called me in October 2014 recruiting me for a contract of R34.00 which they say you get airtime of R50.00. I said to the lady I don't want a contract. The following month in November they put R50.00 airtime in my cellphone, I called them and say to them I don't need a contract they must cancel the contract. They promise me that it will be cancelled. In December my line was deactivated, I call them they said to me I am owing them R120 which I asked them to give me their account so that I could pay them and they should activate my line. I paid the R120 after that I email them the proof of payment they say to me I have to pay the amount of the 24 months contract with them which they said its R663.00 and I must pay the R150.00 for the simcard and they will send it to me, because I need my number as I use it for business, I email it to their email that was in January. They promise to send the simcard since then.February I call them still waiting for their support department March and April again. Yesterday I call them they say I owe them R950.00 before I pay that they will not send me the simcard and they will not give my number back. I really don't know what to do.