To correct weird spelling of my name?

[anewkindoflove]

External supplier keeps spelling my name wrong in emails - and it’s not even an error of getting a letter wrong.

My name is Christina and they keep calling me Crys.

It’s not even a nickname and we are definitely not on nickname terms regardless.

Aibu to correct this?

It's so annoying isn't it. Most people get my name wrong even though it's there in black and white in my email but to shorten it and give you a nickname, arghhh.

I would! It shouldn't be difficult to get a client's name right.