Breach of legislation from African Bank and poor service

I will never ever take a loan though this useless bank or give them 1 cent more of my money. They have breached the POPIA Act every month by calling my mother's number to discuss MY loan with her. I have asked them to remove this number off their records NUMEROUS times now telephonically but get told ever time that I need to go into a branch to get this simple little thing fixed. Is African Bank going to give me transport money go do that! What I do not understand is that you have my cell number, if you call on that number and I don't answer (cause I actually do have a full time job) then you call my mothers number thereafter???? When I called you to get this fixed you tell me to do it online, but when I do it online it sends a pin to my mothers number???? If you called me initially then clearly that is my number which should be linked to the online transactions through the portal. You are breaching legislation, you are not treating customers fairly and you just don't care about your clients when they ask you numerous times to get African Bank error resolved!