so my brakes have been going bad for awhile now, but i haven't had the time or money to get them replaced. this morning while parallel parking, backing up, my car felt like it hit something and stopped moving. when i tried to pull forward the same thing happened. i got out of my car and realized the brakes were completely locked against the rotors. is this a safety feature when the brakes go too bad? is this going to be as simple as getting the brakes replaced or is it going to be a more expensive, and extensive fix. anyone with any info that could help me, please respond. i have no car knowledge whatsoever. thank you in advance

 

also, my car is a quattro, 3.0, automatic.