MTN doesn't care for customers who are disabled

My mother has a contract with MTN and in this year my mom lost her hearing in both ears. Since she had the device she has been "Rica barred" only started using the Sim recently she also app**** for home Wi-Fi and she hasn't received any feedback.

When we call them and I try to explain to the consultants that she can't hear them they say I must put her on the phone they need to speak to her (When she has 0% hearing ability in both ears) The trauma of loosing your hearing suddenly is extreme and than you have to deal with an insensitive SERVICE PROVIDER LIKE [MTN]