If you don't get them, you need to contact the seller to reflect the problem and get a solution as soon as possible. Only the seller can require the courier to do a formal trace investigation about where they was delivered to. If the seller doesn't reply you, try to contact your bank or visa company to ask for a charge back. Or, open a dispute from the platform you buy them to get refund in time.
M parcel has arrived at my country however customs have said that the invoice is missing. I have not been contacted by anybody and I have not received any information about what to do. It has been stuck at "invoice Is missing" for over 2 weeks now. how and who should I contact to resolve this?
If you don't get them, you need to contact the seller to reflect the problem and get a solution as soon as possible. Only the seller can require the courier to do a formal trace investigation about where they was delivered to. If the seller doesn't reply you, try to contact your bank or visa company to ask for a charge back. Or, open a dispute from the platform you buy them to get refund in time.