We had a Tango fare from last fall that was cancelled. The credit was left on file.

We used this on a ticket in February.

Now we're working on the books, and it appears that who ever did the reticketing messed things up to the tune of $300+.

Does anyone have any advice for how to best work through the process to get this straightened out? We have all the PDF's, continuity of ticket numbers, etc.