This is a scam. This person is running several scams from debt collecting to fixing computer problems. Don't let them on your computer and don't give them any financial information or personal information. If they get access to your computer they will disable the computer OS and then tell you so and ask for a high cost to install their product and fix the problem.
They will gladly give you a name, a legit company (that they are not with) and badge number to gain your confidence. The company names exist and other info might exist but has nothing to do with who they are.
You can believe if they get any financial information they will rob you blind. Unfortunately the older people who will be taken do not have internet access and will find out the hard way. Those elderly people will probably be your grandmother or grandfather that is on a limited income and cannot afford this.
Idea: Support a group of experts to go after these thieves. This would have to be a community supported effort but would eliminate this type of predator. If nothing is done then it will just get worse. Be assured your phone call (scam) will arrive shortly and hopefully you have enough knowledge to prevent from losing money to these people...