Discovery is a non-communication business - unreachable without any supervisors or managers

How do you conduct business when you cannot contact Discovery. I was told at 10h00 this morning i.e. 3 March 2025, that one of the supervisors, who were in a meeting, would call me. It is now 17h27 and still I have not received any call! It is outrageous. Discovery debits my bank account for a huge R17K, but cannot give me call! Even if you want to cancel your insurance, you talk to a robot who refers you to a call centre number where you hold on for hours, without being attended to. Maybe I must request a quote. I am sure to receive their call without delay????