Serviceman called me on my cell while my car was being serviced with urgent repairs that had to be done that day. He wouldn't really take ""no"" for an answer and he spoke so quickly, persuasively, and so much it was hard to get a word in. I left that day feeling like decisions had been made for me and paying a lot more than was in my budget.
Pros: you'll have your car in good shape by the end
Cons: you may pay a lot more than you anticipated
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