Their customer service team doesn't care about their customers. They just say "sorry" and won't do anything to support you with bugs, errors or anything. If you buy something and a bug happens due to that, they will just take your money and run with it.
I played their game for 15+ months and their customer service is in a steady decline. They are cash greedy and do not find any way to compensate their loyal members.
Why not say sorry with a few gems or gold?
Even when you cancel your paid subscription after having a bad customer service experience they will not try to buy you back. They just care about their future paying customers and not their current ones.
Did you know it's more expensive to go find new customers than retaining them? Kabam clearly doesn't.