Hi Charles3000
Sorry to hear of the mobile service issues experienced in Spain, we appreciate the frustration this can cause and you taking the time to raise this via the forums. Welcome to the community.
In your post you mention mobile data isn't working? Has it worked since you arrived? How are the other services calls, texts? Does this happen in one location or everywhere you have tried?
We have help here for roaming. We'd also recommend a manual network search if all of the services aren't available.
Rob