I was lied to

On march 18 I have reached out to Xfinity to see if I can lower my bill. After a lengthy chat I was asked about switching my cell phone to Xfinity from Verizon.  I have explained that I still owe on my four phones.  After being asked how much on each phone I was told that all of it will be covered if I will switch that day.  I have asked numerous times if all of the phones balances will be paid for and I was assured that yes it will be paid, I don’t have to worry.  A month later, a lot of hours on the phone and chats nothing got resolved.  Verizon is on my back about paying the rest remaining balance from the phones.  I am sick to my stomach I was to throw up.  I would have never switched if I knew how horrible Xfinity is treating their customers.  I have been lied to and still trying to resolve it.  All the promises that I was told were all a lie.   Being a loyal customer for over 9 years it makes me sick.  I would love to get this resolved asap.  My family is not in the position to pay such a huge amount for the phone balances.  And I have street that out from the beginning and still was assured it will be taken care of.  Please help, have some human decency