Vodacom Bad Service

I am Brighton ****hlangu, I lost a Vodacom Sim Card ( ********** 314) which I bought from pep store as prepaid. I called a Vodacom consultant and they advised me to contact RMCS because they cannot help me with the SIM swap since its a contract, to my surprise the SIM I bought it as prepaid. I took an effort to contact RMCS and one of the consultant logged a call ref num (BLSW-171 ********** 277) and the letter was sent to me to go to any Vodacom store to do a SIM swap. I went to Middelburg mall Vodacom store and I was told that the account is owing I must call back the RMCS and tell them. I called the RMCS again and explain the story and my frustration and they told me to go back to Vodacom and buy a sim card there and when I do so a Vodacom consultant advise me to just forget about using the number again because its not going to work they saw similar cases before. please help as my number ********** 314 is used by my clients since I am in IT industry cannot afford to drop my number in this fashion. ACC number RMCS C ********** /7