Wireless internet has been slow to non existant for the last 2 months

My wife took the Telkom wireless internet contract deal with Telkom in June 2017. The speed was great and we had no problems. However from about October to date the speed dropped from 16mb to 0.89mb. My wife sent an email to them to figure out what is going on and they told her to contact customer. Keep in mind that they only got back to her after a week and asked her for her ID number. Once she provided the information she was told to contact customer care. We have been trying to contact them ever since but never get through. We got through once and the consultant dropped the call as soon as we tried to explain what's going on!!!! The people who work at Telkom are very *********** and rude.

My wife does a lot of her work from home and has been battling to complete her projects since this issue started. If this issue is not resolved within the next month we WILL be canceling the contract with Telkom and going with a MORE RELIABLE provider.