We paid Eurosender to transport two carry-on bags from Montevideo to Lisbon. We filled all the forms requested online with the information about the bags that included clothes and portable computers and paid the full amount for this service in advance. The bags were then collected and taken to the airport, where the Uruguayan customs complained about the forms and asked for documents that neither we nor Eurosender knew what they were. The bags were returned to a friend's house as we were no longer in the country. To obtain said documents our presence in the country was needed, and seeing that we were already in Portugal it wasn't viable for us to obtain them. Therefore we opted to no longer use Eurosender's service and asked for a partial refund since the only cost they had was the transportation of the bags from and to the airport (40km roundtrip). Eurosender is still refusing to do said refund. Note that they didn't inform us previously about the documents and when we asked about them they weren't able to help us.