I have my current & mortgage accounts at Banco Popular Playa Blanca.
The email address is:firstname.lastname@example.org
The phone number is:
Tfno +34 928517791 Fax +34 928517933
The person sitting at the mortgage desk seems to change about every 2 to 3 years, I cannot remember the name of the current person and he did not put his name to the last communication.
They are small branches compared to what we are used to, more like village building societies, so you don't really have to get hold of the mortgage department - unless you want to contact Banco Popular on the mainland.
I ended up with them because I was 'guided' there by the estate agents. I regret this and have been unhappy with them. While my mortgage remains there I am stuck really. My view, based on my experiences, is go somewhere else.