Discovery Bank service is a farce

I have phoned the bank three times, the first two times I was told that a complaint was being logged. The first call the agent said she would mail me the reference number. When nothing happened after nearly a week I phoned back only to be told by another agent that they don’t mail reference numbers. The second agent the said that the first agent had never logged a complaint. The second agent said they had logged a complaint and that it would be dealt with in 24-48 hours. I am now on my third agent who is now telling me that there turnaround time for a client complaint is 576 hours. I have asked to be put through to a supervisor and I currently on hold, total call time is 22 minutes and counting. I welcome ANYONE who can make a decision in Discovery Bank to contact me