Unpleasant auction house behavior

[Nikko]

This nice Constantine's follis currently for sale in the next Savoca auction is a coin I won in the last September Bertolami auction.
Bertolami never sold the coin and didn't answer to my complains.
I'm extremely angry.

[Victor]

Sorry that it happened...unfortunately bidders typically have no recourse except to never bid at the offending auction house again...but, then you potentially miss out on nice coins.

[Lech Stępniewski]

Strange. 55 euro is a quite fair price. It seems that this was not a deliberate deception, but someone's mistake. But mistake should be apologized for.

[Spoudaios]

First time I hear this. So, you won it at Bertolami and then? The Auction house di not answer, nor has written to you?