FW , calm down dear , calm down !
Yes , that would do it for me too , i would go ballistic .
My pet hate (ok so there may be more than one) , is 'official' people calling me Russell the first time they speak to me , and there after call me Russ .
I tend to just ignore what they are saying until they stop and say " are you ok Russ ?" whereupon i answer " oh sorry , were you talking to me ?" .
I am only Russell , Russ or Rusty to my friends and family . To 'officials' i am Mr Clarke .
"Have a nice day " , that does it too .