Standard Bank Call centre provides awefull service

I been on the phone since 9 this morning trying to get through to a consultant in their contact centre. I've been listening to voice prompts and followed the instructions. I finally got through to a consultant and she hung up on me? Second time the line was so bad that I couldn't hear the consultant. Third time the oak from credit card division (which is where I needed to be) transfers me to customer services. I hold for 6 min with no answer. Then I decide to try again and follow the voice prompts. I get through to a guy that says my details are not on their system. This after I gave him my ID number. How it's possible I don't know? Seeing that I've had this card for years now. All I wanted to know was what my instalment would be for September. It is now 10:00 and no one was able to help me. Disappointing.