Trade in that never happened

November 2025, we went into the store and did a Trade in for three phones to get four phones. The trading process went smooth in the store. They told us we couldn’t Leave the phones in the store. We had to ship them back. We waited for the shipping information that never came couple months later we see a charge for $3000. on the bill. Mind you over the timeframe we were requesting for the shipping information To return the phones via the mobile app. Now they’re saying that it’s been too long. and the charges are what I have to pay in order to keep the phone lines, but I never got the information to send the phones back to complete the trad in . At this point, feel like I got scammed