I had a 45-day balance transfer new account promotion. I knew I was nearing the end of the promotion time so I called to verify the ending date of the promotion. I was told that the last day that I could do a balance transfer was 12/12-2022 Monday December 12th. I wanted to buy Christmas gifts with the credit card then do a balance transfer after I purchase my gifts. However I was having trouble purchasing my gifts so I decided I would do a cash advance on another credit card. After I did the cash advance I opened the RCI Barclay World MasterCard app look for balance transfers under the offers tab and the balance transfer was no longer available. I called Barclays customer service explain my situation twice I was put on hold and then hung up on two or three minutes later. I utilize the Barclays app and did a check and was able to get verified once again that the last day I could do a balance transfer was on 12/12/2022. That person I was chatting with said she didn't have the ability to rectify the situation so she gave me another customer service number different from the one I had called previously. I called that number and the customer care person in that office said that he understood the situation and would all the pertinent information to the proper promotions office and they would get back to me. Now 12/12/2022 has come and passed and no one's gotten back to me about the 0% for 15 billing Cycles balance transfer. I had figured the payback at 14 billing Cycles would be under $110. However now that I have a cash advance to pay back I will have to pay $135 over the 15 billing cycles and pay $315 in total interest over those 15 pay periods. This has come as quite a disappointment and will ultimately radically change my Christmas gift giving this year. Since I haven't spent any of the cash advance I will probably not by anymore gifts and return the money to pay off the cash advance.