Why can’t he tell me through the phone?

This is a high school friend of mine working at Toyota, I ask him questions and every time he answers with “when would you like to come in” why can’t he answer the questions over the phone? Also I was asking for an appraisal because my gf wants to trade in her car but I told him “let me fix the brakes, get a detail/buff it out before I take it in” and he said it won’t help with value.

I asked him “If she has negative equity, can she trade in the car for a lease car? Doesn’t that remove the negative equity overtime?”

He responded with “Bro you reply to me every other day I want to help but I can’t answer every question over the phone when would you like to come in. The only way to give you accurate answers is to have you come over”

Reason I can’t answer is because I’m very busy working 14 hour shifts so I don’t even think about getting on my phone. I only have Saturday and Sunday off