They accused me of not returning something else when it was returned to the security checkpoint at their place of operation with a letter noting their number and names. I couldn't be let through because I am obviously not employed there and they blocked my number. Their website has the actual company registered address, which seems to be a 2nd home/(both the owners/HR are husband and wife BTW). I want to be sure that I have some proof I mailed the rest their property. Also, the reason not going back in person to the warehouse where we work out of, because its almost 2hrs with traffic + the waiting times for them to come check me in through security.