Another idea, so simple you have probably done it..have you asked your neighbours, in the local bar, the agent you brought through, the ayuntamiento (OK getting desperate now but…), seen any building work going on and asked there…I think we asked anyone and everyone we came into contact with..
We have pretty much the same here, its very hard to find a builder that can start work within a year…we found ours through someone who worked at the estate agents we brought through, although bizarrely he was recommended by 2 others too..
Although MG has made a valid point about seeking professional advice, he/she has no reason to answer so aggressively. I’m sure there is a name for people who deliberately stir up things on forums, an IT one, not a rude one…probably best ignored I think!! Hang in there, this forum is normally full of really helpful people,