Postal Locations

I had to return a box it wasn't taped because I thought it was for UPS. When UPS told me it USPS I proceeded to the Post Office. I asked for tape and they told me they do not have any! Then I was told they aren't permitted to give me a 10" piece of tape. I asked for the Manager She came out guard up and said " it is your responsibility to package your item" I said I understand and I explained. She proceeded to tell me I can buy it there or go to King Kullen! I said as a courtesy please, I said I've seen the gentleman here help others. She said she will make him aware and again you can purchase tape. She said they follow the rules. I asked her name she said "Gloria" I asked for a last name she said everyone knows her there. I found her very rude and not helpful at all.

No matter what I do to stop mail i always find mail in my box when I return from vacation. What does it take to do something so simple??