Incompitence

i have mde an online upgrade with vodacom, from my blackberry *** to a Tab 4, no one contacted me to explain the billing, the only person who called me was confirming delivery.<br> later on im told that my account is in arrears with an amount of R150.00<br> i wanted my numbers *** to be converted to prepaid and get a new contract number on the new TAB 4(SAMSUNG) howver i was never given opportunity to explain that because no one called me to confirm my upgrade telephonically and explain the billing, no one attempted to debit my account for that R150,00 after the upgrade...<br> can you kindly convert my numbers *** to prepaid because i cannot afford this open line thing of yours, i want my numbers to be on prepaid PLEASE