Disappointed by Discovery Bank

Attempting a very small increase and Discovery Bank has an unbelievably slow turn around, was thinking of moving my FNB accounts over and quickly changed my mind. FNB offered me a huge pre-approved credit limit (1 hour turnaround if I accept) but went to Discovery and decided to rather increase existing credit card by very small amount for a reduction in interest rate. Still waiting on response, thank goodness I don't actually need the money or else I would be in a bind. I have been very disappointed by Discovery Bank since inception.