Vodacom disappoints badly

I have been a loyal Vodacom Fibre customer and have had no issues with them until I had to move house. I phoned the customers service and was told that I could just relocate my WiFi as there was fibre available in the area I was relocating to and a call was logged. After two weeks I called again to investigate as I have now moved into my new house just to be told that they forgot to send me the necessary paperwork. Then I get the shock of my life. My new contract will now be R500 more than my original contract!! I cannot afford this but now am stuck as I have asked for relocation already. Also being told that there will be extra costs involved for relocating. Incompetend and unprofessional. Why can't I just continue with my existing contract??