If I could give them no stars, I would. Paid for a maintenance plan and had unit "serviced". I knew the unit was old and inquired about getting a new one. I was told that someone would contact me with options for installation and new units. I never heard from them again, and the plan included two "services" in which they never performed the second one. Truly a missed opportunity for a large sale and referral business. Then, a year later, I get an invoice for a new maintenance plan agreement when the never completed the first one. I guess Sig Cox has more work than they can handle but, communicating with customers would seem to be an important part of good business execution.