I am so sorry to hear that UPS could somehow conjure up the "wherefores and whatever's" to say your package was not proper for shippng…
I'll try to lighten your mood with two short stories.
I was selling some stained glass (the type you hang in the window) on eBay and a woman from Alaska bought one. She asked that I double wrap it inside one box and then put that box inside another box. She said she lived in the Inuit Village, Nuiqsut, above the Arctic Circle and their mail is delivered by bush plane about once a week, weather permitting (as it was winter…), and that since she lived a bit away from the village, her mail was usually delivered by ATV, Snowmobile, and even a dogsled, weather permitting… she was so happy that her stained glass arrived safely, she sent me a photo of the "mail-sled" bringing her package and a photo of the stained glass hanging in the window. The note said she looked forward to the return of the Sun Rise as she was now in the "polar night…"
The other story concerns me waiting in line at the local post office. The woman ahead of me was holding a box, that had obviously been shipped, and she was fuming mad… since the line was not moving very fast, I asked her if I could hold the box for her and she relayed her story to me…
She was from Wyoming and she was here in Virginia taking care of her mother who had surgery. She left her daughter to house sit while she was here in Virginia. But to make matters easy on her daughter, she had all her mail forwarded to Virginia so she could pay her bills and stuff.
But she bought a bunch of stuff to send her daughter and wanted her to get it and since her mail was being forwarded to VA, she sent the package by UPS…
What she did not know was that since she lived out on a ranch, UPS did not always go out there and UPS and the US Post Office have an agreement where UPS can turn over packages to the Post office to deliver…
Do you see it coming? Well, UPS did turn the package over to the Post Office and since the woman was having all her mail forwarded to VA, the Post Office returned her daughter's package to her, back in Virginia… and she had to pay the Post Office for the Return Postage...
I hope this lightened your mood and that you can work something out about the shipping.
Good Luck!