Frox Enterprises — asking for money

Hi,
On 10th december 2019, i searched for online work at home.
I get a call from that company. They ask to complete the process need for my details. Next day i got an agreement that is not about i talk to the person.
I search the details on net about the company. Its is showing not true. Or fake company.
I started to contact the company person i talk with to get all right details.
They are not receiving any call or nor replying the message.
Now they are sending notice and asking for money. Scaring me for legal action plz help me what to do...