Script (guión): Phrasal verbs, ‘let down’ which means to disappoint someone often by breaking a promise or agreement.
I recently got a new cat called Jimmy. Jimmy was only small but I started to train him to behave and I went out for the first time on the Saturday and left Jimmy alone in the house. First we had a little talk. I said, ‘Now Jimmy, don't let me down. I want you to just behave yourself, be a good cat and I'll be back in two hours.’ Anyway, when I got back Jimmy had torn all the cushions in the lounge and gone to the toilet over my bed. So maybe I will have Jimmy put down.