Dear Jami,
We are very sorry for your unhappy experience. I would like to assure you that your funds are safe.
The automated card top up service had some errors over the weekend and that is the reason behind the issue you described. Our support team works on business days from 9 AM to 6 PM https://www.bitwala.com/contact/ and have already contacted you via email.
If for any reason our automated top up service should fail after you have paid the displayed invoice you still get the rate at that time so the recent Bitcoin price fluctuation does not affect your top up amount.
All the best,
Bitwala Team