No credit to the account? Definitely pursue this! Absolutely, definitely pursue this. Find out why the number was wrong, find out why the technical team had to

No credit to the account? Definitely pursue this! Absolutely, definitely pursue this. Find out why the number was wrong, find out why the technical team had to change it, find out how long it was wrong for, establish whose fault it was, tot up how much it cost you, and definitely ask for a refund! Just think if this was your personal money, what would you do? If you just take the hit, the money doesn't mean enough to you.