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I got the email too and just checked. It works fine now but it's really a negative impression, a new customer would hesitate to check out later. They must fix it so that in future it doesn't create any issues. For me, it was really a bad experience, to be honest.
Regardless of its duration, it's still not fair to take what it's not theirs! It's perfectly fine to care about profits, but the manner in which they'd be achieving it, "isn't fine"!
I agree. Most of them are unethical which shouldn't be at all.