Bad experience with terrible staff - I stopped by ...

Bad experience with terrible staff - I stopped by the store during lunch break as usual (it was fine in the past) and planned on shipping a package to a store in Dallas. An older lady served me very impatiently. I later realized that I forgot to bring the suite number which needs to be added to the address label, so I decided to pay the postage, get the label and take back later of the day after I add the suite number to the address label. The lady suddenly got upset and told me they could not let me take the box out of the door after she put label on the box. This was something that I did not know. She could explain it to me patiently and I would totally understand it. Instead she had to show her impatience and frustration. She peeled off the address label and cancelled the transaction with her terrible attitude. I am not a person who likes to bring people trouble. I said I was sorry for the trouble and walked out of the store with no plan of going back. I am a professional who provides services to my clients. I may not know who UPS works, but I surely know what a bad customer service is. I am glad there are tons of UPS stores in town. For service this time, I would give 1-star at most; I gave it 3-star because the past experience were ok.