My question involves collection proceedings in the State of: Arizona

I was mandated by MVD to install an Interlock device for 12 months in 2007, I completed 6 months of the contract then was unable to continue so I disconnected the unit and returned it to the owner, there was a $275.00 early termination fee I was unaware of, I never received a bill for it but I do not dispute the money is owed, why he did not collect is anybodys guess.

Fastforward 2011, I needed to install an interlock again mandated by MVD, I returnrd to the same company and did the installation .The company says it will hold up my certificate of completion if the old $275.00 is not paid with this new contract, my feeling is this is a New contract and that the two contracts have nothing to do with one another, I asked him to send a bill for the old balance due to my house, he does not want to. My argument is THIS HAS NOTHING TO DO WITH WHAT HAPPENED FOUR YEARS AGO......Thanks