Hi Jake
Had same problem with outside wall of my apartment on La isla, got in touch with polaris customer service, and after few requests, they came and fixed problem, by re rendering outside, and re plastering inside, e mail attached.
If you have no joy I think I have olga's e mail some were, if she is still working for Polaris, she is very good at getting workmen over to fix problems.
http://www.polarisworld.com/polarisworld/en/atencioncliente
Regards
Michael and Yvonne