Mr. Fix-It mobile

So a customer texted me this evening said "so and so gave me your number", I said okay I don't really remember anybody specifically but what kind of car do you have, what's wrong with it, what's the address, and what day do you want to do it?

and they said "What really? never mind I'll just bring it to the Dodge dealership "

what did I say wrong, I'm a business with a couple thousand customers I have to keep it professional short & to the point.

how did I offend them I don't get it🤔