Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I'm disappointed with stock status

I'm really disappointed. I expected the circuit breaker on April 16th and here it is April 21st. First they said it was lost in transit, then they said it wasn't in stock. I always check to see if it is in stock first; I don't like to deal with back-orders. They were in stock. If it sold out, it would've been nice to be notified. I've never had this problem with the many things I've ordered from Amazon. This is a first, but still I am very disappointed.