Anyone else had a bad experience with a developer in Lisbon, Portugal? Any good ones?

Hello, My husband and I have been looking for an apartment in Lisbon for about 6 months. We have seen a lot of beautiful apartments, and even tried to purchase one in an old building that was being rehabilitated by a developer. We now wish someone had warned us, and hope to warn others; the developer misrepresented the promissory contract terms, asked us to sign a non-refundable reservation (which was unnecessary, and we were foolish to sign), then presented us with a promissory contract that contained terms different than previously represented. He then tried to use the reservation and our 10,000 Euro to force us into paying for most of the unfinished apartment up-front. When we refused to agree to the new terms, he kept our reservation money. We could probably sue to get it back, but more money... Has anyone else had this happen to them? Beware, a reservation is not necessary and no honest developer would make you sign a non-refundable reservation. Does anyone have an honest apartment developer to recommend? The developer we dealt with was AZ invest; Renauld L'Ermite Thank you, Holly