Terrible service, no internet and no help.

Last Wednesday, a week ago, my internet abruptly stopped working. I sent a troubleshoot request to Afrihost.com, my ISP, and they rep**** the next day blaming my router. I mentioned my router is fine and sent them some log info from my router. They didn't bother replying until Sunday around midnight. Since they they have consistently blamed my router, despite me having tried another router from a friend to the same conclusion: zero connectivity. I have tried the same methods that they have had me try every other time over the past 5 years any time my connection goes down, to the same conclusion, nothing works. Yesterday they offered to call me at 20:00 which they didn't. I sent them another message in the troubleshooter this morning and several hours later they have still not responded. A week later I am no closer to any real answer, and despite me having tried a second router, they continue to blame that. I did mention that last week a day before my internet went down that a Telkom truck was servicing a pole, and the next day my internet died. I have also mentioned that almost every single time in the past I have had internet problems it was at the exchange. I cannot log a fault with Telkom however because I still have a dialtone on my line, and one of the things mentioned in their service is that they offer as a go-between Telkom and the client to settle issues. A week later I still have no internet and nothing but a bunch of dead end ideas from them. This is the first time I'm complaining about their service, as in the past their service has been exemplary. If this cannot be resolved soon I will be moving to another ISP which actually wants my business.