Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Frustrating for my sons!

As the picture shows,but doesn't say, this is a "lego" imitation, not an actual vehicle.It was easy for my son to put it together in a 1/2 hour, but for the past 2 days, it has fallen apart each time he pushes it, which brings him to frustrating tears! I think we'll have to glue the entire vehicle together!I'm thinking of returning it and the other one I bought that hasn't come in yet. I thought they were regular vehicles, but apparently "built to rule" is the imitation Lego name.Save your money.. I think the 3 stars I gave it was too high of a rating.