Free not free

I had planned on leaving team mobile and called to get my exit pin #'s the gentleman with whom I spoke offered me 3 Samsung watches an s24 and lower my bill to 100 dollars which I gladly accepted.The problems started immediately and now they are trying to charge me for everything and my bill has jumped to almost 300 a month and they actually turned off my service for non payment ....I'm ready to give everything back and continue getting my exit pins ....nothing's ever free