Technician closing the call

I have logged with Telkom about the line ********** 655 speed running at 0.32 download speed and paying for 2mb line. They have sent a technician out twice reference numbers: 143CWK040817 (04/08/2017) technician came out checked line and said there is still a fault on the line but the next day he closed call (08/08/2017). Then i logged the call again on 318CWK080817 (08/08/2017) they came out check line said there is still a fault with the line but closed again on the 18/08/2017. I called the call centre on the 20/082017 to complain about the line not working and why the close the call when the line has not been fixed. The call centre agent dropped my call after i waited 15 minutes to get hold someone. I tried again this morning to call them waited 5 minutes still answer.