I don't like posting negative reviews. But maybe it will save someone else from experiencing the same thing we have. We have enjoyed Christianaudio for years. But for some reason when we updated our payment method (our cc was expiring, so we entered the new number), they did not use the updated info, and stopped charging us. We did not notice for several months, and they never contacted us. When we did notice, I reentered payment info at least 3 times, waiting several weeks between times, and nothing. All our credits expired, so we lost the 18 or 19 credits we had. Totally their issue - we had supplied the payment info. When we called, they had no idea why it wasn't working and just told us we owe over a hundred dollars for the months that they had not charged us, when we couldn't get books anyway. No one has any idea how to fix the problem. No way to communicate except through email. Now what? So disappointing!