Call center agent says we must close account

I had called in to query if I qualify for a credit limit increase, in which consultant told me yes and the increases department will call me within 24 hours, Its more than 90 hours and Noone called me, yesterday I called the call center again the cards department actually told me if I cannot wait for the call I must close the account, how rude and disrespected I felt and then she told me that I am not the only customer and there is only one person that is working in increases department. I am so considering closing my account, for those of you reading this please do the same. We are treated so lowly and inferior rather take our business somewhere else.