Michael wrote:I'm really not sure what I can do to negate the charge for the mistakes.
Have you brought this up with them? If they made the mistake and they are willing to charge you to fix it then it only stands to reason you should charge them for your time? Get my point?
I've actually done this before and it was due to a banking error which they wanted to then charge me for. I asked to speak to the bank manager who explained that even though the bank made the mistake of putting extra money into my account they needed to charge me for the a loan!. I told him I completely understand his position and would like to forward them my invoice for my time to notify them and personally coming in to the branch to fix the problem, pointed out my hourly rate. He asked for a minute then came back and told me not to worry about their mistake and all was good again.