Pathetic service , and no answer from any department

This is one of the most pathetic service that I have received, initially I have app**** for a credit card limit increase , which I was told that would take 48 hours , after one week that I have submitted the application , still no response , I have tried roughly 10 times to phone per day fro two days after holding on for more than 25 min , and frankly no answer at any of their departments , no call back or anything. this is an urgent matter and would have expected it to be handled quick and professionally .