We had a extra room within our room which was open...

We had a extra room within our room which was opened when we arrived. we never used the room but my wife left her suitcase in there and i closed the door which then became locked, we phoned down to reception and they belittled me and that i had done something quite bad. When the porter came up to unlock the room he proceeded to do the same, "you should be paying for this, did you use anything" etc. My over all my experience was tainted by this incident.