Car radio does not work (safety spin)

Hello people I have a problem! I recently had my car battery changed from the Suzuki workshop and after the changing battery my ——- car radio or navigation——no longer works!!! Point I want a safety pin that I don’t have since I am the second owner point that in the Suzuki workshop do not help me any further since they don’t know it either “”(that’s a joke)) “and my device should be upgraded and sent!!!!! now wei I have already tried the four-digit code with 000 0 and 1 2 3 4 it was ineffective. I did not try the chassis number the last four numbers either. How can it be done without sending it away please for your help. I also searched all documents like e.g. operating instructions of the navigation and so on, there was no small map to be found with the si cherheitspinnen this even more!!! Thanks to the team and all the readers