Before investing in a new Saturn I would, very carefully, with the power off, use a sharp object or paper clip on the socket of your existing one. Do not poke into the holes, just clear away any bits of plastic that are obstructing the holes. As long as you haven't already rammed plastic inside, obstructing the connections, you should be ok. Do this before trying to force your new cable into it.
Looks like someone has been VERY heavy handed with it in the past.