Dollar Tree review: unfair and bad managing

The Manager is very unprofessional and rude. He is definitely not suitable for the job. I have been with Dollar Tree for 4 years and have never experienced a Manager so unfriendly. I have seniority over everyone in the store and end up with the 13-18 hours a week while other employees that get 20-25 hours a week. I have OCD on the job and go above and beyond the call of duty. My customers mean the world to me and have plenty of great surveys. There seems to be a CLICK between Mgr and an Asst. Mgr and the employee that receives more hours than I. My customers love me because I make sure I can assist them in any way. This is so unfair! Something needs to be done about this. I feel so unappreciated even after going that extra mile...