A word of warning - if you need to complain do it immediately in resort. Loudly and to managers, reps, resort managers etc..
We were very disappointed with our Esprit holiday to Tignes last year, and we did complain to the hotel manager, but got nowhere. On our return we wrote to Esprit and were dismissed because we hadn't reported our problems to the resort manager (who never appeared).
We received no real apology for our endless list of problems, but they did send us a measly £60 as compensation for a £3000 holiday.
Our answer - we will not give Esprit any more of our hard-earned money.