Oh man. I live on Market too. OnTrac has done that same exact thing before, and sometimes I only discover it because someone passing on the street or a neighbor rings my doorbell to let me know I have a box outside. They also don't seem to be able to read, as they will accidentally deliver packages to xx30 when we're xx20 and vice versa.
I hate them so much. I go out of my way to leave terrible feedback for shipping on every OnTrac package I get at this point. Their reps keep telling me they're not going to do it any more and still it's such terrible service that I would cancel Prime membership if it wasn't for most packages being delivered by UPS/FedEx/USPS.