Keyed!!

Sorry to see this.
I know a few people that this has happened to.
And you did exactly what they did.
And they got the result as you did.
People are very vindictive. Even if they are wrong or being rude and disrespectful for your stuff they will retaliate. No one gives a shit.
You should just have moved it or left if it bothered you that much.
Now the good news.
Get it all fixed up with new paint and go back to the same place and watch it get keyed again. Your a target now. They know how much this truck matters to you.
Out of 4 that i know of. 2 went back later to the places in question later in the year and got it again. So a 50% ratio is not very good.
Get it repaired and buy a shitbox to take to "Establishments".

I hope it gets repaired and you can put this behind you.