Sounds like a scam.
Is it a WB123 Merc? Although boxy-ish, nice cars.. but bloody expensive on parts - even from the wreckers.. Don't ask how I know. Last made in Jan '86.
Yes, exactly.
Why do you think that every time you call a 'help desk' the first words you hear are "We will not accept and sounds of anger from you."
Then they put you on hold and are somehow surprised to find that after waiting half an hour or more, you are getting irritated and disenfranchised.