What do you do when a vendor fails to invoice you for a subscription, then retroactively charges you during the next subscription term?

We've had a few cases of this lately: a vendor fails to invoice us for a subscription. Entering the next subscription term, they come to invoice us for the new term and notice that they failed to invoice the for the previous term. Therefore, they decide to invoice for the upcoming subscription term and for the previous subscription term.

How do you handle the vendor in this case? Does your institution have policies on how to manage these issues?

Thank you!

Mark Winek 
Georgetown University


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