Credit limit increase delayed

I app**** for increase in my credit card limit on 20th December 2022. Everything went well and approval was granted. I was told that the money will be made available within 40 hours. Today is the 23rd and I'm still waiting. I've been calling and I'm told that the person who dealt with my application is in the meeting and no one can be able to assist. I've been a loyal customer for the past 25 years but the way I am treated recently is not good.