Broker Union LLC review: Vidanta shares

I was contacted by this "firm" and told I had some shares from Vidanta that needed to be cashed in the by the next day at midnight - and was instructed to call VIdanta - they provided the number immediately to get a portfolio "code" and to call back immediately [protected]. I did call the fake Vidanta number and they offered my 4 years of fees in exchange for not pursuing the shares - that seemed super sus so I said "no"got the secret code and called back the Fake Broker company strangely enough they had a lot of information about my membership. - anyway when I called back - I was told I had 300+ share worth $850 each - yeah - that is where I said Scam - but they were good - really good. Luckily while I was talking to them I looked up Broker Union in Rochester and nothing - Then I asked for the CRD# and things took a turn and "Elsa" had to put me on hold to find it and never came back - and that, my friends is how I didn't get scammed.