CELL NUMBER DISCONNECTED

I had a Top Up 75 from Real People which had ended on the 19th of February , received an sms on the 10th of February advising that all airtime / data needs to be used up by the 20th of February. On the 12th of February I had to top up my data as it had depleted. On the 19th of February at 8.30am I received sms advising that my Top Up contract was migrated to Prepaid and that I must go to the nearest Vodacom outlet to rica my sim, little did I know that I was not able to use my phone as the number was placed on VM by real people. This is very unprofessional as this was not relayed to me, when i called the call centre I was told the very same thing also being told that my data and airtime was also cancelled. This data and airtime was not given to me by the contract but it was funds that I loaded as this was a top up contract. I WANT MY DATA & AIRTIME BACK <br>