Telkom is costing me!!!

I work from home I teach English online to foreign Countries therefore the Internet is vital to me as I can not work without it and if I don't work I do not get paid!!!! My Internet has been down from the 18th of December 2017 I called several times and all I get told is that they sending a message to a technician and someone will be coming out to fix the problem .....NO ONE has come and I am unable to work ......this is ridiculous and so disappointing ....Telkom your customer service is by far the worse and you are costing me big money!!!!