An angry commuter has unleashed her transport woes on Prime Minister Malcolm Turnbull at a Sydney train station.

Mr Turnbull was at Central Station on Wednesday to announce a crackdown on unscrupulous private colleges.

Malcolm Turnbull is confronted by a passenger at Central Station. Credit:AAP/Mick Tsikas

But after making it through a sea of selfies with commuters, the public transport enthusiast was confronted by a woman who said she was unable to get home.

"I come from the country and I'm stuck. I don't come from another country, I come from this country and I'm stuck," the unnamed woman yelled from behind the ticket gate.