Being charged for a FREE PHONE

Was given a phone for getting Xfinity Mobile. 3 months later my checking account was overdrawn drawn Because I was being charged for a free phone. A year later, I have no Xfinity mobile account because I didn’t pay for a free phone. My checking account was overdrawn because I didn’t pay for a free phone. I have no Xfinity mobile service because I didn’t pay for a free phone. I was turned into a collection agency because I refuse to pay for a free phone.