How we do it with the shipping costs for the return of the parcel?
If you take the bill for this, then I need a customer number - the Import-Recount-Number. This number should be nine digits and the first two digits are 95 or 96.
Or I have to take the bill for the shipping costs, or we share the bill and you shall pay me the normal amount for the product plus the other half of the shipping cost - I track the shipping costs so all before.