Would you take this offer?

[chriscozi]

The plot thickens: while analyzing our usage/billing history, we discovered that our annual click increases (10%, 10%, 12%) exceeded the contracted 4% max allowable increase.

Which is why we need to look verrrry closely at our contracts and inspect any pricing changes during the contracted period w/regards to said contract.

If you have an accountant or staff member who handles finances THEY should know what the contract stipulates and THEY can catch the errors before they compound and you have to claw the funds back.
Doesn't mean you don't have oversight responsibilities.
Our Finance dept. regularly forwarded invoices to confirm any changes.

Actually it is a 'Good Thing'©® (lol) you are negotiating when you discovered this because you have more leverage in the discussion but you can expect significant push-back on this regardless.