I recently purchased a Samsung A 54 that carrier is Verizon. From someone on marketplace. Stupidity I didn't check to see if the phone was paid off fully. The phone is unlocked so I had full range to factory reset it an put my info in the phone. But when it came for me to make a call. I couldn't, due to the simple fact that the phone rightful own didn't pay it off. Mind you I do have my own Verizon sim card and my service is active. How do I come about getting this phone usable under my account?