Anker's customer service is amazing. I bought a two-port charging block from them on Amazon, and while it works great, I was disappointed to find that it's a little too easy to knock it out if the wall.

I wrote a 4-star review in which I mentioned this issue, and within an hour or two, I received an email from an agent asking if my address was still the same so they can send me an updated unit. A couple of days later, I had a replacement that didn't suffer the same issue.

I never was pressured to update my review, never asked to return the original unit, never solicited to buy more stuff. They seemed to have a genuine desire to make sure their customers are being served well, and that is the kind of thing that will make me a customer for life.