Sells products that stop working after a while and just tells you they cant help you

So me and my dad is using the Telkom mobile 20gb packages for more than 2 years now. Where I live it works perfectly. (Worcester) At my dads house I used to also get 3g or 4g in the beginning. (Ladismith) No problems. Since October last year my dad let me know that him and my moms internet got so slow they couldnt even whatsapp call or watch youtube videos or hotspot their laptop to the internet as it is so slow and keeps on disconnecting and connecting. This problem is still persisting 5 months later.

I have done the following already: 1) Gone into a Telkom store to make a complaint - Was told I must go onto the app and log a fault. Tried that but cant as the app needs a landline number. 2) Phoned the telkom customer service center - Was told to go onto the telkomsa menu and select roaming and partners. - Did that and the internet stopped completely. No service. 3) Phoned customer service again - Was told by other agent to go onto telkomsa menu and put it on telkomsa. Internet came back on but still slow. 4) Phoned customer service again - Was told the same stories as above. Told them tried all that and it doesnt work. Then was told the area we are at isnt covered by Telkom and it uses MTN's towers and that in those areas we only get 2mbs coverage. Luckily I downloaded a speed test app and ran it on all our phones. The result being not even getting 1mbs coverage and it disconecting the whole time. I explained to the lady how can we have had perfect signal when we bought the product more than 3 years ago and now we it is so slow we cant even open attachments on email or whatsapp call. What happened to the MTN internet speed? She said she doesnt know. I asked to be put through to a manager who does know. I told him everything once again and he checked my area and told me the same story about being with MTN towers etc. I then asked him to tell me why then when we bought the packages the internet worked fine and now since October it doesnt. We are paying for a service that we arent getting. He said that the problem is on MTN's side and he cant help me. I then told him that they are renting the towers from MTN so obviously they should have a relationship with MTN and a contact to try and figure out the problem. I was told he doesnt and they cant contact MTN. I asked him then what should we do? I was told that Telkom can do nothing and that we must buy a signal booster if we want to get faster internet speed. I explained to him that how can that be Telkoms advise as we pay thousands of rands to them for these packages and all they say it is not their problem. He just said sorry he doesnt know. I asked then if I can escalate the problem to a higher department that maybe can help and was told no. I asked for a reference number and was also told they dont give reference number. I then asked for his name so that I can make a complaint to the ombudsman if needs be as usually they ask for a reference number if you want to log a complaint. I was told Andrew Maboshego.

SO TELKOM? Can you please advise? Before I have to take you to the ombudsman again? I will be posting this to facebook as well and also copy and paste this as a complaint to MTN on here as well. I have this conversation recorded on my phone as well if you need any proof of this conversation