Vodacom APN

first I ported my number from Cell C to Vodacom so i can get better network coverage. ever since i ported my APN (internet) did not work at all i contacted Customer Care 082111 so i can resolve the problem and they assure me that everything is fine so I decided to move my prepaid number to contract and surprise surprise , my internet on my phone still does not work its been over a month now and still no internet access I am paying around 380 rand per month for my contract and the last i spoke to customer care the manager Keanu told me i must cancel my contract i mean what manager does that how hard can it be to get internet access on my phone can this problem be resolved or where can i go to terminate this contract because this is the worse service i have ever experienced in my life .