<prompt> Human: I pay on time and 20 more than asked.I was shocked to find out a bank i took out a car loan with had closed my account because another bank has bought it.I was fine with everything and just signed the paperwork to switch.I woke up this morning and its showing i have no balance and my credit score has plummeted.Do i have to rebuild it??? I just started my credit. Im 19 and had a 644 or so now im down in the 500s.  <response>: It should regain its value with a few months of regular payments.This happens whenever a line of credit is closed. When you pay off your car completely itll happen again. If you ever pay off student loans completely or close a credit card there will be a drop. 