Working in Retail

Working in Retail After a lifetime of being terrified to work with customers I had no other option than to work in retail customer service as I needed work ASAP. I’ve worked there for over a year now and it’s improved my confidence and stutter tremendously. However, EVERY SINGLE DAY I have people who laugh at me. It can be anywhere from a slight chuckle after I stutter to a full blown laugh, even after I’ve explained my speech impediment. This has gotten me feeling incredibly down and I’m just curious if anyone else has experienced this?