High-vis serial pest accused of harassing small business owners

A door-to-door salesman who has allegedly spent years harassing small business owners across Australia is being investigated by Victoria Police.

Nick Tsekoutanis is facing widespread backlash after footage of him went viral online.

Those approached by the serial pest, clad in high-vis, told A Current Affair Tsekoutanis goes door to door to different businesses, barging into employee-only areas while trying to sell vouchers for car servicing.

Victoria Police confirmed it recently interviewed Tsekoutanis following a formal complaint from a Melbourne business owner, releasing him as officers investigated further.

Mikaela Borg told A Current Affair Tsekoutanis entered her warehouse uninvited while she was working alone.

"I stepped away from my packing table and just said, 'Can I help you?' And he just said, 'Can I offer you a specialised car service?'"

According to Borg, the situation escalated when she demanded he leave.

"He started getting up in my face and started to swear at me and insisting to go upstairs into my private office area," she said.

"All I remember telling him is get out.

"He said to me he wasn't going to leave until he checked upstairs."

Borg's doorbell camera captured Tsekoutanis shouting at her to "jump in the lake" as he left.

Dozens of people have posted warnings online documenting Tsekoutanis' aggressive sales tactics across multiple states.

He refused to be interviewed when contacted by A Current Affair.

A man who answered the door at Tsekoutanis' registered business, a residential home, said the salesman had gone into "hiding".