Postal Locations

On Friday July 17th, 2020 approximately 9:35am I went to my local Post Office in Lac du Flambeau, WI. 54538 at 614 Peace Pipe rd. I politely asked for a package I received and email and text message my packaged arrived, (Note that no one else was in the retail office, nor their was no one waiting) The lady who was present was rude when I asked for my package, she then proceeded to go check the packages, I could clearly hear her throwing and slamming packages around in the back, she then brought my package to the front counter and dropped it on the counter, my package was a very expensive condenser microphone, she then just walked away. I must stress and point out that I am always friendly, respectful and courteous when I go to the Post Office. There was no call or reason for her to behave in such a manner. I am searching for an online complaint form.