Negative coins after doubling bug.

The last two updates to PvZ2 on iOS have resulted in me getting a new User Dave and User Dave1 profiles added to my other two and drastic increases in resources. So drastic that my coins rolled over into negative land. Why are these values are signed numbers? If they were unsigned, even overflowed, they would still be positive and you could purchase things. What does it cost to buy over 800,000,000 coins to get out of debt? How do I fix this?