My wife and I purchased expensive ski clothing in Germany. The selling company used a service to assist with the refund of VAT. We had the items shipped to our home in the USA via German Mail to US Mail. We were instructed to have airport customs stamp our sales receipt when we left Europe. Next, we were told to go to the VAT refund counter with the stamped receipt.
When we asked for a customs stamp on our sales receipt at the Vienna airport, Austrian Customs people said unless we had the items with us they could not give us the stamp. They advised us to go to the US customs service in the US for the stamp.
I have posted a question to US Customs on line for information on this process. No response yet.
Has anyone had a similar experience with VAT refunds?