But I seem to remember a couple of years ago when Spanish ATC did go on strike. Most of spain was closed. The military took over in the Canaries and I remember checking in to an ATSU and getting the response "Canaries Radar controlled by Military".
Also the threw their teddies out and are now punishing pilots and airlines by denying any direct routings. Also new sids and stars seem to have come out that also create more cost to the airlines. BLN2C in AGP is a good example. It was designed to allow traffic to land on RWY 12 as the BLN2H crosses the Rwy track. BUT RWY 12 is only open at weekends, (Great waste of money) so why can't we use BLN2H during the week. It's all over the sea anyway so noise is not a problem.
If your gripe is with the Spanish government or your employer, don't penalise the airlines and passengers that your country relies upon.