DOES IT MAKE SENSE

I have bought a Nissan Tida bout 3 years ago. The battery went flat and i took it out. the radio didn't want to play so i called Nissan Eastern Cape. They told me i need to put a code in for the battery in order for the radio to play and it will cost me R900.00. Does it make sense. I'm a disabled person and could not go into Nissan to talk to them.<br> <br> What is going on.