Xfinity threw me a promo deal

[Rolex]

So I received a call from the Xfinity company. Their goal was to save me and my family's money as low as possible. So, they've given me a deal that has these things:

Starting payment - $45
2 lines - $17-18
No automatic fees
Free phones: LG K51 and Samsung Galaxy S21

Total price: $33.67

They'll call me back in a week to make a decision to ask if I am gonna take this deal. After they mentioned that, they've gone on further to talk about a free Xfinity Flex, which is kinda like a streaming device on your TV. I am a little blown away from it, shocked, and skeptical...

Are they giving me a free upgrade of this?