Bad service at Vodacom

i had a contract number and i called vodacom customer care in september and i told the gentlement that i am fed up with vodacom (long story) and i wanted a pre-mature cancellation. i was very clear to the gentlemen that he must calculated whaever amount i was owing and i would pay that amount in full in oredr for my contact to be cancelled, i also told him that after everything was paid up i wanted my number to be pre-paid. i then received a settlemt letter via email, went to vodacom to pay the amount. after paying i called customer care again to confirm that i paid and they said i should email proof of payment and Id copy which i did. i called again after a few days for them to confirm my payment and that my contract was closed and they confirmed this. i was also happy to see that the same number was now pre-paid which gave me confidence that my contract was closed. only to have the same amount that i paid debited yesterday, went to vodacom store, called customer service, was told that my account has been handed over to the legal department (was shocked) then the legal department said it was a mistke coz my account was up to date. Called cancellations department did not get any assistance coz its expalnation after the other which i dont understand. the matter here is i caaled vodacom and i explained that i wanted a settlemet amount to cancell my contract, which i payed hence my number is now pre-paid. i dont know what to do now coz all i want is to get out of that stupid contact and im not being assisted and y is my number now prepaid if i still have an outstanding amount! im Gat Vol with vodacom contact and i will never recommend it to anyone. Regards, Annoyed and ****ed