You may have already looked at other threads – one here; https://www.spanishpropertyinsight.com/forums/viewtopic.php?t=2540&highlight=aifos
http://www.typicallyspanish.com/news/publish/article_12119.shtml
There are others on this forum who have been caught up with Aifos; hope you will hear from them. As you say cannylad, “keep clear of Aifos”.
But as you are already caught up with them, make sure you have an expert litigator working for you.