I don't know if I am being unreasonable and would like some input.
I bought some random vintage car part my husband needed at the start of June. After 10 days, I emailed them to ask where it was and received no reply so raised a request for information (which automatically holds the cash in their account).
After being ignored for the best part of three weeks, I had a reply within 24 hours saying that there had been a death in the family and that the part had been put in the post that day.
That would have been fine. I'm not neurotic and don't demand items by next day post. However, in the same email, there was a paragraph stating that they had misjudged the postage and it had in fact cost them £12.90 not the £3.00 postage I'd paid and would I send them the difference.
I've done this myself and would never ask the buyer for extra cash. Therefore my initial thought was no, I'm not giving you any more. However, I feel mean and am not sure how to reply without sounding like a bitch saying tough luck.
Just in case it matters. The part was over £80 and we paid the going rate for it.