Appalling

i am beyond disappointed in this bank. i have been with them for a good numbers of years but the service recently has become something I cannot describe. Please tell me why must i be the one to run after you for service you promised to offer yet its below standard. This is week 3 that i have had an issue with your service provider employed by African bank together with the bank. I have been trying to redeem a voucher with no luck. i have been sent from pillar to post and each time i call African Bank I am being promised that Caroline from the complains department will call me back but im yet to receive any type of resolution to my problem.