Peach Airline is thief

I hate peach airline in Japan. they are thieves. let me tell you why I think they are really thieves.

I am a student. working part time for 800/hour. I booked a thicket in Peach website and paid for that by credit card. immediately I noticed that I have made mistake for date. I cancel it and booked another ticket. 

Now they do not refund ANYTHING at all. they are stealing 100% of my money. It is 45000 yen! 

I work 8 hours a day for one week for this money and they just steal it. I can not believe it.

JAPAN PEACH AIRLINE IS STEALING MY MONEY. 

THEY ARE THIEVES!