Justin,
I had to change the door locks on my 300E over the summer. Some a--hole decided to do the exact same thing. The locks around where I'm from costs $300.(I'm sure I've could've found them cheaper, but I just was pissed and wanted to get this over with). As for the key. It was coded to where I could use the same key and they gave me 2 extras(probably for jerking me in the first place
).
Hope everything turns out for the better. If you catch them, beat them for the ones that got away with doing mine also. TIA