Bad service

Initially on arrival for breakfast the service was fine and food was OK. Our child went to play on the indoor jungle gym and my wife went to check on him, I ordered a cup of tea and a coke, the drinks arrived and I decided to go take photos of our *** in the play area as the tea was hot anyway. After 5 minutes or so I returned to find that they had cleared the table of a full coke and the pot of tea! The place was not busy and we there at least 45 minutes already and the play area was 10 metres away! surely you look around 1st as who leaves a full coke and pot of tea on the table? They offered to replace but we were then in a hurry and I told them to take it off the bill which they did not look happy about.. seriously??