Has anyone ever ran into bad doctors?

I feel like there's many where I live considering that doctors here seem to cancel appointments way too often for it to be anything serious when people's health might be at risk, here's a new one that just happened, the life insurance rejected helping, I thought that the whole point of life insurance was for them to be a gotdamn life insurance, people are so damn useless, has this happened to anyone before?
Has anyone ever ran into bad doctors?
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