Instruct: Classify an Amazon review into positive or negative sentiment.
Query: frustration

My son has and loves the recycling truck that goes with this so we assumed this would be terrific however, the plastic logs slide out of the clamp and won't stay on the truck. He was so frustrated that I tried and couldn't get it to work either. He told me to send it back. We paid some ridiculous shipping charge so I didn't want to send it back if he could use it so my husband cut real wood logs for him to use and put tacking tape on the truck bed. He uses it often now and likes it a lot more.