This. You are going to have a tough time getting it straightened out. I too am in UPS/IBT. I had an issue with them when I retired. I worked right up to and on the last day before I left…November 30th, my supervisor cleared me on December 1st. Didn’t work on that day at all, received no pay, except for my first pension check. Fast forward 3 months later they want their December pension payment back saying I was still on the books for that month and not eligible for a pension check. Took me a month of phone calls to HR,pension board and a few trips back to my supervisor to try and straighten it out. Luckily my supervisor was a decent guy and helped me get it sorted out so I didn’t have to pay it back. All I can say is good luck you’re going to need it.