DH and I run a business together. A supplier of ours, with whom we spend quite a substantial sum of money each month, repeatedly spells my name wrong on emails and invoices, despite the fact that I obviously spell it properly on my emails to him. He never spells DH's name wrong, and my name is a pretty popular well known name, and is not difficult to spell.
He emailed me today spelling my name wrong and in my reply I mentioned that he regularly spells my name incorrectly and could he please amend his records to spell it correctly in future.
DH says it was rude to correct him but it really has been annoying me. Especially as it's a popular name and as I regularly email him with my name spelt correctly when I sign off the email at the end.