point of contact
A person or entity one can seek to access information or services. Our account manager Sarah will be your new point of contact moving forward if you need any information about your account. The consulate should be your first point of contact should you need any assistance during your travels.
ˌpoint of ˈcontact
a place where you go or a person that you speak to when you are dealing with an organization: The receptionist is the first point of contact most people have with the clinic.