Um, I don't think so.
First, the mailman isn't allowed to give out personal information, even if he had it. My mail person doesn't know my phone number, just my name and address, so how would the mailman know that information?
Second, if the horses weren't even halter broke and were soooo terrified of people, how were they supposedly loaded on the trailer? Horses who are feral do not willingly happily load up and go merrily down the road.
Third, at 2:40 today you posted some drivel about giving the animals hay. So suddenly we're supposed to believe that ALL of this occurred in the last 2 hours?
Sorry kid, not buying your story. Didn't buy it from the start, but this last part is really out there.
My opinion is that you're just some bored suburban kid who has little to no parental supervision, and you thought you'd make up a story and see who would believe it.
As a fiction writer, you're pretty bad. Maybe you need to take a creative writing course and get some real hands on experience with horses. That way, your stories may start to resemble the truth.