Pathetic service

What a pathetic bank. I try to make payments, but suddenly my payment limit is 0. I try to call the call centre, nobody bothers to answer my calls, and lets me use my airtime to hold for 10-15 minutes without success. Logging into the app, there is a "technical error" on the OTP that does not want to let me in. I cannot do business like this. Do you want my business or not???? I am at the point of closing the account and going to a bank that actually works!