Telkom internet terrible service

I wrote an email (support#***) on April 29, 2021 on behalf of my mom. She is paying almost R900 a month for her internet and getting a lot of buffering. She has gone to telkom and the changed her device at a cost because they apparently had to change her package, but she is is still having the same problem. In my email I requested if they can perhaps change her to a fibre package, but to date I have only received the email that they received my email. The service is appalling. I am looking for another internet provider for her now, and the she will be penalised if she cancels with telkom before her contract expires. She is going on 60 and it is disgusting that they rather force the expensive packages, instead of offering her a more affordable option.