Customer dissatisfaction

Horrible Service, would not recommend them to anyone.... Fast Forward, I received a call from a debt collection company. Apparently my Acc had been handed over for an amount of almost R3000. For what and how I don't know. I emailed the company a month in advance notifying them of my cancelation of service from them due to poor services(mind you my account was up to date) . I have been complaining to them of their poor service ever since. The was a time I had to go without Wi-Fi connection for over a week and had to wait for their technician to come in and fix the problem (I had to make a plan to get data and keep everyone connected till the problem was resolved by them and I still had to pay the full amount for their poor service at the end of the month.

I tried to get in contact with the account department for answers and the is no answer for me