Terrible Service

I contacted African bank 4 times just to get a paid up letter, 2 times on a call, 1 on a chat and lastly on whatsApp all attempts were unsiuccesful because no one is willing to help, when asked to speak to a Manager or a Supervisor I was advised all of them are in meetings and not taking calls, they promised me that a Supervisor will call me in 2 hours, still no one called. WHAT DO I HAVE TO DO TO GET SERVICE FROM THIS COMPANY???pathetic!!