Poor Service

I went to an MTN shop to do a sim swap. I was told that I had a contract with a company called mobiles plus and they wont be able to do a sim swap for me I need a letter from the company. I called the company and the agent (Winston) told me they could not do a sim swap for me I need to pay R150 to get my sim card. I had a disagreement with the agent who later drooped the phone on me. I called again and spoke to another agent Lee I asked to speak to a snr and she sent me to a lady by the name of Ponstho. I explained my situation to her and that I use that number for most of my dealings and cant stay without that number. I was told I needed to pay that R150 inorder to get my sim. The following Monday I paid and sent proof of payment. They said it took 10 working days, that was on the 16th of March 2015. I still have not received my sim card and its the 23rd of April. I call the company almost daily to check on the progress and its always difficult for them to locate my sim. I am disappointed with and want out of this contract R30 is not worth the frustration. They don't call to update you on what is happening but they always want to confirm communication details which they don't use.