Intermittent internet, Horrible service and equipment

This is not the first time writing a review of Telkom (in a year) and their horrible service. We've been struggling for 4 Months now at our company to have them sort out our horrible internet as THEIR line keeps on dropping. We've made numerous calls back and forward and send thousands of emails, but nothing seems to happen. Technicians come and go, but the problem doesn't seem to leave with them. We pay a fortune for a service that is just not delivering, but when it comes to invoice date, they want payment or your service will be suspended. It seems that this is the norm, that they just expect us to accept this. We as a company can not carry on like this and we expect some huge results.