Poor service

I did an online upgrade and RAM had incorrect delivery information and surname, I called Vodacom to correct the information and was advised that they will send through a new form with updated details and never had any feedback nor my delivery from RAM. I called a week later and did an online upgrade and my details were supposedly updated and when I called to follow up on delivery with RAM they still had an incorrect surname. I did an in-store upgrade on another line in January and never had any issues with surnames and I would do the same now if I could except that none of the Vodacom shops have stock for the phone I want. I now just want my contract cancelled and number converted to prepaid. I will NEVER take up a contract or upgrade with Vodacom again.