Instillation was easy. Intoxalock is not helpful, nor does their customer service have any knowledge base around your case even after reading case notes. They are unable to tell you anything including final calibrations if needed or reporting details. They continue to unnecessarily charge customers fees, no violations or missed calibrations the lease expired over 30 days ago and we are still being charged because they will not do what is needed so the device can be removed. They are extremely negligent to their customers . This is a sorry, company and I would not recommend them to an anyone for any reason ever my advice steer clear. If you were needing an interlock service, do not use Intoxalock. They are all about trying to keep the device on your vehicle so they can keep charging you.