We're aware that some players experience a payment problem of game units not being credited. Please contact us immediately if your game units are not added after making a purchase and do not dispute the payment unless you don't hear from us within 2 days.
When a refund takes place, the game draws back the amount of coins, cash and hearts offered in the pack. If you didn't receive the units in the first place, you would lose your existing units when they are drawn back. So, it's always a good idea to contact us first instead of disputing the charge on Facebook so that we can check your logs and manually add the offered amount to your game. This would save your time and you wouldn't have to deal with loss of units.
Thank you all for your understanding and patience!