Limit Increase

I've had my Nedbank credit card for a long time, I also have 5 other account with nedbank including a homeloan, vehicle and so forth. I have one other credit card with another bank. So I approached Nedbank and asked if I could increase my limit with an additional 10k so that I can use that to pay and close my other card. So that I only have my Nedbank card and I only pay one card's interest fees and seeing that all my accounts are with Nedbank it makes sens to have everything at one place. <br> <br> After days of waiting, they were only willing to give me a 2500k increase. I would like them to please see if they can better this. I'm paying an instalment every month anyway. The other bank is willing to give me an increase, so if not I'll just do the opposite and close my Nedbank card and keep the other bank's card.