If payment of all undisputed charges is not received within thirty (30) days after your receipt of the final invoice, a finance charge of 1.5% per month, or the maximum amount allowed by law, whichever is less, will accrue on the unpaid, undisputed amount, commencing on the date of receipt of the final invoice. You will submit to us an itemized list of any disputed charges within fifteen (15) days of receipt of the final invoice, or else all disputes are waived. If any charges are disputed, all undisputed amounts will be paid within thirty (30) days and the parties agree to work in good faith to resolve the disputed invoiced charges in a timely manner, and you agree to pay the remainder immediately upon resolution of the dispute.