W463 Doors no longer open *SUPPORT* 🙁

Hey people with my uncle’s G can’t open the doors with the trunk anymore. Have attached videos like I’m trying to turn the key but can’t! https://www.dropbox.com/s/w5euucoaimjiu4/IMG_1219.MOV?dl=0https://www.dropbox.com/s/g6bd7peqou3sql4/IMG_1218.MOV?dl=0https://www.dropbox.com/s/w1bero9qh3eusxd/IMG_1217.MOV?dl=0 p.s. in the 3rd video was just the front door that fell to 😛 Have already sprayed WD40 on keys and into the lock but didn’t get anything, I hope e you can help me there. Greetings