the bottom line is, you were let down/cheated by your agent, your lawyer, the developer, and the council. A crap system that allowed you to be conned and building to go ahead, even though it was illegal!
For heavens sake, we all know there are good agents, lawyers, developers about, but the reason Spains is in the current mess is largely due to the sort of people who have let you down. How much more evidence is required than thousands of unwanted/half built/illegal apartments and thousands of court cases against the crooks at all levels, stretching years ahead.
You have every right to blame the guilty parties. You are not the liar or the cheat.