Telkoms service is pathetic

Good day, I took up a 4meg adsl with telkom last year November, from January 2019 I had endless problems with streaming, I was getting speeds of 1.2mbps but I'm paying for a 4meg line, whenever I phoned in 2 complain (approximately 16 times) they alwas said they Will log a complaint and send a technician out (6technicians came) with no joy or help but the 6th technician said I will have this problem forever because the substation box is 5kms from my house he said cancel or upgrade.during this time of 3months I lodged a payment dispute because I felt I'm paying R605. 00 per month for a 4meg line but got speeds way under 2megs finally I upgraded to lte and when I lodged payment disputes for the last 3months I was told they will investigate and get back to me in 14 days well its been just over a month now and no one has contacted me regarding my refund or credit, telkom is a bunch of *******