Sorry, I don't speak British English

My friend N, and her mother both speak with such a thick British accent that I have a difficult time understanding them. N tells a funny story of when her mother first moved to Cairo.

Anxious to use some of the Egyptian Arabic she had learned, Mom went out shopping one day.

"Shukran" she said proudly as she handed the clerk her money.

"Afwan" he replied handing her the change.

"I've already got one" she said.

"No. AFWAN" he repeated.

"And I told you - I've already got one!"