Poor and disgusting service received from MTN. Lusanda Dyantyi

MTN call centre service is Pathetic. I called in and spoke to Lusanda Dyantyi and she hang up on the call on me while I was asking for a confirmation email that they can't blacklist cellphones at night. I've been having my contracts with MTN since from 2019 and the service is just getting worse and worse. I just hope the CEO of MTN offer training to their employees as they're not represent the companies good values.