Peter, you have a choice; sit there, do nothing & wait for the worst to 'happen' to you or, do something pro-active like at least getting someone who's 'independent' of this fiasco, to find out what the situation really is for you. That's actually Very easy to do & will not cost you very much & if the situation is as bad as you fear, will at least save you handing over even more money.... I know it's scary..... but you really do need to 'bite the bullet' before you - some of us, have a breakdown.
The 'lawyer' you are using is usually in France for several weeks at this time of the year & incommunicado.
The 'builders' are still just giving you Bull---
PS: Just seen your latest post Peter which suggests you are or will be in Turkey on Friday? Please.... get somebody to check the situation out for you now.