https://www.wsj.com/articles/banned-from-amazon-the-shoppers...
https://www.theguardian.com/money/2016/mar/18/banned-by-amaz...
As for terrible customer service, see the below for my reasons for cutting off Prime:
https://news.ycombinator.com/item?id=16937290
In particular:
• Prime shipping is no longer certain to be two days.
• Those which are assured to arrive within two days don't always do so, but I never get a credit for that delay against my prime membership for a failure to meet their SLA even though I'm supposedly covered with some sort of guarantee.
• Prime shipping is no longer certain to source from Amazon warehouses.
• And worst of all: Amazon commingles Amazon-sourced with FBA merchandise. I've had numerous issues with counterfeits from "sold by Amazon" listings in the last two years because of this.