No luck with appeals, took it upon myself to ignore their correspondence. Had two letters from a debt recovery company with typical threats, not heard anything from them in a good few weeks now though, they stopped calling and texting me as well. Taking that as good news.

Any update on this? I'm in the same situation and not really sure what to do? Anyone have any suggestions? Thanks

I too have received one for the first time in a few years of visiting the same costa, and on many occasions have overstayed the time limit. Is it fair for them to suddenly start enforcing the rules despite not having done so for such a long time (I'm also talking several years), and is there grounds for appeal as a result? If there was the option I would pay to stay longer as it is a good place to sit and get work done, which often does mean overstaying the time limit, however as there isn't the option of paying I find it quite unfair that they are suddenly trying to fine people. Any thoughts?