My company had us in a hotel away from home for 3 days and told us to standby. After the 3 days they sent us an e-mail saying we could go home.

Not sure what your question is. However, if you were on standby, it is possible that you should be paid for some or all of that time.  If that was the gist of your post, then you should contact the labor department's wage and hour division to determine if you should have been paid.