hi , yes we too had all kinds of probs with our electrics , being an electrical and heating engineer in uk i sorted most of them myself too numerous to list all , but my main prob was an unmaid live connection somewhere in the metal stud walls which i could not find, when the wind blew it touched the wall and tripped out a 25 amp breaker and the main 40amp on the incomer , polaris eventually sorted it after many numerous complaints via email and telephone , so far all has been well since it was repaired, the quality of the installation work is terrible and i would reccommend getting your electrics checked professionally , i am not sure if most of the work was not carried out by a proper spark but maybe labourers instead
to be proper qualified in spain you must be spanish fluent ( to sit there exams) i have been told ,so beware anybody who cant speak spanish is not spanish qualified elctrician , although a lot say they are
We also had problems with main drains blocked on rear from property which i also fixed after having waste come up in the bath when toilet was flushed , problems was exit from property to main drains blocked by builders rubble that had simply been brushed down hole before inspection pit cap was put on, when i cleared it it ran for nearly 3 mins, must have been 2 weeks worth at least !!
You will get it all sorted eventually and then every time you return it just seems to get better , we love being there now , but at first wondered what we had payed for !
Hope all goes well !