Telkom service non-existent

After no troubles with our ADSL line for the past year, about two weeks ago the internet speed suddenly dropped to roughly 0.15 Mb per second. This does not even allow for a google search. After several phone calls with Telkom, who reset the router multiple times, it was confirmed that we would get a call for an appointment to be paid for someone to come and check the line on site. After firstly showing up unannounced and with no-one available to let them in, we called to set up an appointment for the next day. This time, no one showed up. Half an hour as well as 2 hours after the confirmed time, we called Telkom to complain and ask about the agent who was supposed to come. We were promised to get a follow-up call to confirm yet another appointment. Two working days later we have still not received any news from Telkom. In the meantime, we have had additional expenses to compensate for the unavailable internet from Telkom. We are also due to receive our monthly statement and can be sure that we will not receive a discount for the 2 weeks that we have had no access to the service we pay for. This is turning out to be a very frustrating and expensive experience with no end in sight.