Since most people here in Microsoft Community do not work for Microsoft, it is difficult for us to definitely know if you fell for a scam or not...
We - normal users just like you - have no way of knowing if you called the legitimate Microsoft support or if you perhaps called a fake support.
Could easily be that the support people at Microsoft use helpme.net which is one of the many domains registered to Logmein,Inc (https://www.logmeininc.com/about-us) who provide software/services for remote access etc etc.
When I'm going to www.helpme.net I get re-directed to fastsupport.com which is also fully legitimate and also belongs to Logmein, Inc.
gotoassist.com belongs also to Logmein, Inc.
Some related links:
- https://blog.gotoassist.com/tag/helpme-net/
- https://community.gotoassist.com/gotoassist/topics/helpme-net-not-working-fastsupport-com-slow-to-access
- https://support.microsoft.com/en-us/help/29289/receive-remote-assistance-support-from-microsoft
IMO it would be best that you contact/ask Microsoft directly:
https://support.microsoft.com/en-us/contactus/
and
https://support.microsoft.com/en-us/help/13948/global-customer-service-phone-numbers
and
https://www.microsoft.com/en-us/about/officelocator
In case that you find out that you indeed fell for a scam: http://support.microsoft.com/reportascam
HTH,
Julia