I don’t what to do about the thermostat

I could not figure out why our home was so cold.

My kid is constantly changing the temperature control, and it is driving me crazy, and I never had this problem when he was younger. I miss the days when my kid was too short to adjust the temperature control or touch anything that he is not supposed to, now, my kid is a teenager, and obviously, he thinks that he runs this house, and we have established clear rules in our home for behavior and have set clear limits on things, but my kid completely ignores them. One of the rules that we have is that you cannot touch the temperature control. We have a heating system and a central air conditioner, and we use them, then currently, our temperature control is consistently set to 72 degrees! Ever since my wife and I have been married, this has been the setting on our temperature control, and it is my intention to keep it that way, but it has become obvious that my kid prefers a colder temperature, because he is consistently changing the temperature control to keep our central air conditioner running time, at first, I thought that there was something wrong with our temperature control. I could not figure out why our home was so cold. I would set the temperature control, and then an hour or so later, the air conditioner would be running again. Finally, I caught my kid changing the temperature control, and I yelled at him. Now, he adjusts the temperature control at least twice a week despite being grounded, losing his gaming system, and being told not to. I particularly don’t know what to do about the temperature control, maybe I should buy a lockbox.

a/c repair