Who called from 4102771184

calls ring 2 times then hang up.....
getting tired of these daily calls on my business lines

Yes, same thing happened to me -- same "not a valid extension" recording. I hung up and simply blocked the idiot who called. Done.

They called and hung up before I answered. They did not leave a message. I did not call them back.  I don't recognize the number.

It's a rewards program related to Best Buy!  I didn't answer the call but I called it back from a phone where the number is blocked and got a prerecorded message about a $100 coupon.

There is a very good chance that the company you mentioned has nothing to do with the calls.  Other retailers have also been used.