[Orthodontics] 3 years and 5 months of orthodontic treatment

I've had orthodontic treatment for 3 years and 5 months and I'm receiving treatment from the director of Shinsa Main Clinic. My teeth are not crooked and my mouth protrudes just enough? so I didn't think I needed orthodontic treatment and wasn't going to do it, but I got greedy and started later. At first, I had partial orthodontic treatment for only the front part of the lingual side for 150 for a few months, but then I changed to full orthodontic treatment with Clippy C and paid 300 more, so the total cost was 450. The doctor in charge was not the director originally, but the doctor in charge quit, lol. They changed me to the director in the middle. I was told that it would take 2 to 2 and a half years, but it took about a year longer. The orthodontist and dental hygienist usually touch up the teeth and the director only does the important parts. There was no monthly treatment fee, and I go often because it's close to my company.