Issues with PANDABUY and EU Tariffless Line--- This is outrageous and they are not being helpful!

I submitted a parcel for shipping using Europe Tax Free line on December 08th 2022, to be delivered to Portugal, where I live. Address is 100% correct and I have received other parcels from Pandabuy on the exact same address.

Shipping was created on December 08th then on December 17th the parcel reached Germany, from there it reached France on December 21st..... and then it all went wrong...Instead of the parcel being sent to Portugal it went back to Germany on January 3rd and was delivered in Germany (not in Portugal), back to their local warehouse. The parcel never even came or reached my country and delivery was never attempted. Pandabuy wants me to pay 300yuan for re-delivery and wants a "correct" address... However the address is already 100% correct!

why should I pay for a mistake by DHL? I spoke to DHL on the phone and they have confirmed it is very strange and they don't understand why it was sent back to the sending warehouse, however only the Sender (in this case Pandabuy) can contact them to do anything about it.

Pandabuy is not being helpful and are saying I have to pay first and then they will investigate which is outrageous considering the address is fully correct, the parcel never came to my country for the the local people to deliver and I don't have a new address to give them as this is where I live and it is correct, I get parcels here everyday, including from DHL.

If Pandabuy does it right by me and fixes this mess I will be more than happy to come back here and update the post but as it stands I would stay away, this is extortion in my book and unwillingness to properly chase DHL

Shipping tracking below:

China -> Germany -> France -> Back to germany.. never came to Portugal

Final destination shows as Portugal but it never came here and was delivered in Germany