No service what so ever

I upgraded a data contract about seven months ago. My night data didn't work. I reported this at Kolonnade where I did the upgrade. Eventually after me going there to follow up 3 times I spoke to Hendrik whom promised to call me back since they were off line. I have been back there 4 times since and 4 months since reporting the issue I still can not use the data that I am paying for. this level of service is pathetic. Hopefully someone would now take the time to fix this issue as Hendrik is clearly not interested.