interlocuteur

/ɛ̃.tɛʁ.lɔ.ky.tœʁ/
1.
nounmasculineSing

the person you are speaking with (a conversational partner)

a contact person or representative you deal with in a professional/administrative context

J'attends que mon interlocuteur du service client me rappelle.

I'm waiting for my contact in customer service to call me back.