Calling from abroad

I opened a bank account at foreign bank.
Today , I got a call from a foreign woman who is a bank clerk.
That is the first time for me to talk with a foreign person in telephone ,so I was very nervous.
It was difficult for me to understand what she said, but I managed to acheive a goal of the call.
I have to improve not only writing and reading skill but also speaking and listening skill in English.