I will take phone calls, and like others here I find talking to customers enormously useful and instructive. I also use Zendesk, which I find more efficient be

I will take phone calls, and like others here I find talking to customers enormously useful and instructive. I also use Zendesk, which I find more efficient because I can send screen shots that clarify my instructions and responses. I can also search my customer support history for frequently asked questions and their answers.