Review Poor service ever

I came to the Adum branch to redraw money and the lady calculated the money with a different value of pound. So I told her to explain to me why the money was reduced and she got angry and insulted me and didn’t give me the money telling me to come for the money on Monday.
I came there on 14th September 2019 at 11 00 am and I waited till 1:45pm and she claims that she will close at 2pm
You need to give her proper training
Because this is not done in London where I came from
She’s totally unprofessional and disrespectful.