Waiting for two months for response

I placed a complaint about Vodacom being closed during business hours on the 9th January when I was suppose to get my upgrade. I was informed via hello peter that I would be contacted to resolve the issue. To date (more than 2 months later) I still have had no response. Does such service mean I should rather move on and cancel all my contracts with Vodacom?<br> Today I get a message that my contract fee will be going up. Cleary they can bill you more for less, or no, service however they fail to resolve or even provide feedback regarding my complaint!!