GringoPost | Cuenca, Ecuador: How can I submit a VAT refund from the US

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How can I submit a VAT refund from the US

Hello, We were told that we could complete our VAT refund at the Quito airport but the desk has been closed and all that was available was a drop box with no forms or guidance. Does anybody know the address and forms that we need to submit these from the US?

Rhonda