I recently had a parcel sent from Amazon US to Borderlinx and once Borderlinx received it they said it couldn't be sent to me as it didn't meet there parcel sizes or weight and would get back to me with a fix (I was happy to pay more for postage etc). After a week or so I hadn't heard anything so i got onto their live chat. I was told it can only be sent back to the original seller as their US warehouse has now been closed down (the parcel arrived well before this closure date).
I now have to pay them to reship back to Amazon US in the hope I get a refund (but they were nice enough to offer waiving their $20 admin fee).
I told them they can keep the parcel as I just don't trust the chances of getting a refund and losing even more money.
In my defence, the parcel was just 4x plastic hand reels for small cables. Lightweight and small in size so I find it hard to believe that they were over the size or weight maximum.
Total waste of time and money