Pathetic service from FNB Credit Card

When I phone in to FNB credit card. I am kept waiting for about an hour for a consultant to answer the call. When the consultant does answer the call, he or she puts the phone down and cuts me of. I have a limit of R20000.00 on my Cr card but ITC shows Ref. No. ***0 with a limit of R170000.00. This places me in an uncomfortably situation. I require my ITC from FNB to be updated and cleared. I require a paid up letter from fnb credit card