telkom not interested to help people

HI All what kind of service does telkom offer for residential clients? i report my line to them at least x2 a month for slow speeds.i have a 20mb adsl line with them paying over R1000 p/m for the service and the best they can do for me for the last 2 years is 12mb. for the last 2 months been down at 2mb. i reported it on 23/08/2018 again and next thing you know they switched me of completely. now im begging them just to have the 2mb line back on again and they cant help sorry. only place we can phone is 10210 .no local support nothing . is this it? no one can give me a date. just the techs got it on hand thats all they can tel me for almost a week now. i run a business from home and this is telkom for you.no care of loosing anyone .dont care . please need some advice or even a private company that i can use.