Landline disconnected from a disabled paying customer

My mother has been a customer of Telkom home landline for 32 years .Five years ago we decided to install a Telkom ADSL line with Telkom . The line has been going slower and due to the fact that my mother is a pensioner now and no longer employed we decided to cancel the contract of the ADSL line as it has came to the end of its contract a year ago . We cancel the ADSL via Telkom online portal , we then received a sms stating that the ADSL line will be cancelled aswell as our Telkom landline. My mother made contact asking them not to cancel the landline only the ADSL line . The lady at the call center advised her that she will escalate a email for them not to cancel the landline. On the 31 December 2021 we noticed that they cancelled both the ADSL and landline. I made countless calls to Telkom asking them to please reconnect the landline as we made it very clear that we only wish to cancel the ADSL. My mother is in a wheelchair and do need the landline in case of emergency . I am so disappointed in Telkom as up to date no effort was made after calling their call centre more than 7 times with R200 airtime not to mention . Telkom is already a failing company and does not care for its loyal customers.