Postal Locations

On several occasions I have come home from work to find my mailbox left wide open with my mail inside. I go to work by 6:30 AM and don't return until 4 PM or later, which means my mailbox has been left open all day. My husband and I have had to let many pieces of our mail dry out before being able to open it because of rain or snow saturating it. I have had issues with not receiving statements (my bank contacted me regarding a missed home equity payment and also for our truck lease). There have also been several instances that we and several of our neighbors have received other peoples mail, and I don't mean 1 or 2 pieces, all of their mail and none of our own. The other issue we have encountered is having our mail left on our side porch with a package. On 2 separate occasions we have found this and our mail has been blown around the back yard. We have called as well as stopped in to voice our concerns and to ask that this not be permitted, to no avail. We would greatly appreciate that when our mail is delivered to make sure that the mailbox is securely closed. It's a new box so it opens and closes securely. Also, that our mail be placed inside the mailbox and not on the side or front porch. Thank you