Is it bad to pay with cash?

My male hairstylist and a female coworker were at the desk when I was ready to pay. When I asked him if there is discount with cash (because price wasn't agreed in the beginning), the female coworker quickly got up from her seat and left us. Why? He has a higher position than her though. Btw, I also did add a... show more My male hairstylist and a female coworker were at the desk when I was ready to pay. When I asked him if there is discount with cash (because price wasn't agreed in the beginning), the female coworker quickly got up from her seat and left us. Why? He has a higher position than her though. Btw, I also did add a 20 percent tip on top of the fee.
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