On 7/22/2021 @ 6:10am I went to LabCorp @ 534 2nd Ave, Ste 104, Collegeville, PA 19426. I walked in unknowing that we were still required to wear mask although I was vaccinated. The lady behind the desk said you must have a mask in here. I apologized and said I did not have one and that I was vaccinated. She raised her voice and ranting about people coming in the facility with out a mask. There is a sign on the door that reflects a mask. She proceeded to give me a mask which she was not happy with doing so. Continued to talk to the customer she was waiting on about me while I sat in the waiting room. I was only sitting for 2min until another lady called me to be checked in. Upon checking in I asked for the lady next to us her name. She stopped helping her customer flew her heard around the cubicle and proceeded to spell her name to me 2x. And said do you have my spelling correct. I can also spell my managers name for you. I said no thank you I have this and please note I will be reporting this for poor customer service. She proceeded to talk about me to her customer. I asked several times to please stop talking about me and to continue waiting on her patient. I then proceeded to talk to my person and explain what happen. I explained all she had to do was give me a mask. Shethen stopped what she was doing and began raising her voice saying STOP LYING STOP LYING We have notice all around you have to wear a mask. LOUD... This was extremely humiliating and unprofessional. She was not waiting on me she was with another customer and continued to provide poor customer service to her patient and continue to interrupt me from providing detail information to my representative. My lady was able to answer my questions regarding my blood work however with her interruptions. I am a customer and my experience with how she was horrible. To be belittle and called a LIAR and be talked about to 2 other patients was uncalled for and very unprofessional. she is working in a professional medical field. To act the way she behaved is uncalled for... She has no clue why patients are there and for what reasons they are there. I am going through some heart issues and to be screamed at about not having a mask. Was so uncalled for and the HIPPA -CONFIDENTIALITY - Talking to other customers about me. I said to her please do not discuss me to your customers.