Where do I report Vodacom they are dubious people

Am so mad and seen the worst ever in a life time with vodacom viber I have never been under any debt in my life until i subscribed for their viber services of which with service delivery they are ****s and no government agencies working to put this monster to check I asked for their services installation last year and after 2 months my subscription was increased from R500 to R700 without me noticing until December and I asked them why till now no one gave me any reasons for that to make things worse i told them and moving to a new apartment in end February asked for them to make arrangements for relocation for the new property I moved to 2 months nothing happened till i changed till I switched which is best and even cheaper and i never had issues with their services no reason to call their customer care since the installation now on my credit record i saw vodacom charging me for the old property i called and told them to cancel my subscriptions and failed to come to the new property for installation all to stain my record asking me to pay R3500 for what I never used is this happening rally where is consumers protection in SA when some big companies will just ****** a common man and no one care to come through to this I kindly need take a legal actions towards them this is ridiculous and not acceptable its cruelty i regretted ever using their services this are monsters not human and been sending them emails with no response since February till date