Welcome to Justanswer.com, my name is Dustin.I'm sorry to hear about the issue you are having, I will do my best to help you resolve it.
You can purchase a compatible 3rd party map for Spain on an SD card at a large discount from what garmin charges here http://amzn.to/2aq3JDs
Or, you can get the full garmin map of Europe ( Including spain ) here http://amzn.to/2atS8AJ
Both of those are cheaper then just purchasing Spain and Portugal directly from garmin, as seen here https://buy.garmin.com/en-US/US/maps/on-the-road-maps/city-navigator-nt/city-navigator-europe-nt-spain-and-portugal/prod8426.html
Whichever of those three maps you purchase, to use the map on your garmin you would insert the SD card. And then go to settings, maps, map info, and select the new map on the sd card. You will t hen be able to use it and navigate.
If you have further questions, let me know.
I strive to provide great service, and greatly appreciate a 5 star rating clicked and submitted when you are satisfied.. I always answer follow up questions.Dustin S.Senior Technician and Network Switching Systems Operator / Maintainer.