You have to be willing to lose clients is the real answer. They try to get you to do some extra bullshit not in the brief, you say no / offer a quote. If that d

You have to be willing to lose clients is the real answer. They try to get you to do some extra bullshit not in the brief, you say no / offer a quote. If that doesn't sit well with them, so be it. BATNA is everything.