I recall being told that every business is required by law to have a 'complaints Book', which must be available for perusal by somebody in 'local officialdom' (the police?).

Can someone confirm that this is so, and what is the Spanish name for such a book, so that, if the situation arises, one could say "The Complaints Book, please!".

I should add, maybe, that in 7 years' living here I have (so far) never really felt the need ...... unlike in many establishments in some other countries!!

Thanks