Received a call from this number claiming to work for/with Qwest. The appearance was made that it was Qwest who was changing/outsourcing the long distance provider to provide savings for small businesses. That the call was mandated by the FCC anytime there was a change to the services/pricing. They had me go through this hurried verification process by one Amanda. The CS# that was given to me was 877-469-0830. It answers as Long Distance America.

I called Qwest after this to verify. I was told 'they were scammers,' that Qwest did not authorize anybody to work for it or with it.

Call from a lady claiming to be from AT&T, with a 40% reduction in long distance charges for my existing small business account.  That this was mandated by FCC.  she wanted me to approve the allegedly reduced charges.

I asked for call back number, 877-469-0830 and ask for Claire Morris.  
That number really answers as Long Distance America.
And AT&T confirms that Long Distance America is not AT&T.