Sat nav disc stuck :(

first of all I'm new so a big hello to everyone!

Basically I'm in trouble at the moment not too long ago I decided to update my maps on my late 2008 Prius t-spirit (uk model) and I went on to a website to search for a compatible disc. I downloaded it and burned it into a DVD. I ejected my old disc and put the new one in. It started loading and screen says DVD check in process but it keeps resetting. Tried ejecting the disc but it will not come out.really stuck at the moment any advice would really be appreciated

Thanks
Albert