Pathetic customer service.

I have an existing credit card with this Dicovery bank. Three weeks ago I app**** for a increase on this account. Last week I called in to follow up and has lodged two formal complaints with the bank, as I am yet to receive any feedback on the status of my application. They just don't supply any response. This is unacceptable. If I wanted pathetic service like this I could have joined any other bank. Do not make the mistake to join Discovery bank as there customers service is non existent. Pathetic!!!!!