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To answer you question regarding call which says they are from Microsoft is actually a scam call.
This type of scamming works in 2 ways1.Either gain access to your PC then collect the login details by installing key loggers etc.
2.Scam call is also used to sell some applications and services too.I know you are confused no worries I will explain. What the scammer is trying is to make you believe is that your PC have some kind of serious errors and security threats. Once they had convinced you he will ask you to open a specific program and so that he can access the PC. Once he have access to your PC he will run some applications that shows a lot of fake errors and security threats in your PC. Then will tell you pay for the application so that he can fix the issues. To be honest applications like these will do more harm than good and sometimes system ends up crashing.
Please do not provide access to your PC unless the tech is from a company you contacted also make sure that company you contacted is genuine by checking multiple reviews.
Do not give any kind of your personal or bank details to the person who contacted you.Collect as much details from the person who contacted you like phone number to contact those, Name of the company and the person who contacted you, office address etc. Most likely they won’t provide much details. You can use these details to file a complaint in the local police station also you can report it on the following site :- http://www.actionfraud.police.uk/
You can also report it to Microsoft using this link : - https://support.microsoft.com/en-us/getsupport?oaspworkflow=start_22.214.171.124&wfname=scamsurvey&locale=en-us&ccsid=636084919154748481I hope the above information answers your question if not please let me know.
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