On the telephone

What phrases would you use if you made a phone call?


Nelzon-Kmargo

Nelzon-Kmargo

Nelzon-Kmargo
I speak:
Spanish, Portuguese
I learn:
English, French, Italian, Portuguese, Irish
Busuu berries :
60615

Hello.
Whois calling?
This is Nelson Camargo
What can I do for you?
I'm calling back because i received a call before.
I don't know who was calling you.
Thank you.

Who is calling?

I´m calling back, because I received a call before.