Tried doing this but no reply ? I just want to know if it is legit or not ?
I received an email today thanking me for registering to supportassist which included my phone number I had entered supposedly upon registration. I'm pretty sure I registered over 2 years ago . Email was:  SupportAssist_NoReply[NAME].com Details below. Congrats! Your installation and registration of SupportAssist is complete. It named my phone number ,chosen language . Not asking for any subscription fee or anything ?   
Supportassist email