Budgetair.com — Budgetair.com is a scammer

I book the flight depart from BudgeAir.com. Their system ask me to finished the payment which I did. Later, It shown problem of booking, and ask me to re-enter the depart schedule, I noticed the time for departure have one hour difference. I accept the time schedule. However, when I received the etickets. It automatically change the return date which the system didn't ask me to make chage. I believe that is their system design problem or they did it on purpose to charge more fees. Therefore, I told the customer service that I couln't accept the schedule. Theytold me I have to pay extra fees for changing or cancel the schefule. But I want to cancel the booking (because they charge very high on changing fees) and I refuse to pay the fees, but they are not response my case. This company is scammer which use lowest price at Google flight search, and charging customer additional fees for changing and canceling schedule. Be aware.