Good lord, not again!
Personally, I think if you accept that money, then you're worse than the people who offered to donate it.
So you've been a victim of car crime? Since when does that qualify someone as a charity case?
If you accept charitable donations because you've been unfortunate then you're a disgrace.
If people have spare parts etc then that's one thing but "donating £20"?
Absolute disgrace that so many people misunderstand the concept of charity. If you had any pride, you'd refuse it on principal.