FrumGuy, I don’t know what line of work you are in. Nowadays, anyone who teaches Torah is called “Rabbi”. Those who have beards and work in Torah institutions are called “Rabbi”. Those who are “identifiable” as Yirei Shamamyim – either outwardly or due to their actions and/or the way they conduct themselves – are called “Rabbi”.
On the one hand, l’Ma’am ha’Emes you should probably make the point that you don’t have Semicha. On the other hand, as long as you feel that you are making a Kiddush Hashem in your work, then perhaps it is not necessary to protest beyond that. (I follow this advice myself, as I am in a situation that is at least somewhat similar.)