NO RESPONSE TO SLOW INTERNET QUERY

I have a 10mb uncapped fibre line. I have been experiencing very low internet speed (1/2 mb per second) since 6 January 2018. I attributed it to being capped. However, even after the rol***** date on 8 January 2018, the same problem persists. On 8 January 2018 I called your customer service centre on numerous occasions and was told that a fault was logged. The reference number I was given is 22ATK080118. The testing centre called me and I was informed that the line is open according to their test and that the technicians would have to investigate. I followed up on 10 January 2018 and was told that the technicians attempted to contact me to arrange for access to the premises but that I was unavailable. This despite the fact that I did not receive any such calls. I was told that a note would be made on the system and that I would be called. Upon following up on 11 January 2018, I was told by Ayanda that the technicians may not even need access to the premises but that she would request that they call me with an update. It is clear that nothing is being done and that either the technicians or your call centre staff are being disingenuous. Kindly attend to this as a matte of urgency. Alternatively, please advise as to how I would go about cancelling my contract.