Telkom VERY SLOW INTERNET SPEED

Good Day I have a ADSL 10meg wifi contract with Telkom more than 2 years now. I pay R850 every month but I am paying for a service that I dont receive...Everyday I do a speed test which show me my internet speed is less than 4megs...I have logged countless complaints. When the technicians will come to my house to resolve the issue even they confirm that my internet speed is less than 4megs..they will fix the issue and do a speed test but than my internet speed will only reach 6 to 7 megs. My internet speed never reached a 10meg line even though that is what I am paying for more than 2 years now...On the 15th June 2021 I logged a call *** it's today the 24th June 2021 and no technician came to my house...I phoned Telkom everyday from the 16th June 2021 and everytime they tell me a technician will come out yet I am still waiting. I want Telkom to reimburse me as I am not getting the service I am paying for and this is very unfair. Telkom is receiving payment every month and surely they should pick up that I am paying for a service they can't provide.