Poor ADSL not being fixed

My ADSL has degraded to almost unusable so I logged a fault. I did this and got the reply "cable will not be replaced- will offer alternative technology for services". I am a high user of the internet and pay around R1200 a month and I use about 500 - 800 gigs a month. We do not have Fibre in our area, nor do we have good LTE. The only offer I get is 220 gigs of data for R999 using LTE and I was told that the only way to get to 500 - 800 gigs is to buy additional sims. This is unacceptable, because Telkom is to lazy to fix my copper, they tell me I need to pay up to 4 times the price. Some advise please. My neighbours all want fibre in the area but we get told they are not installing there. Next step from here, ombudsman