BudgetAir.com is a *******

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 ******* which use lowest price at Google flight search, and charging customer additional fees for changing and canceling schedule. Be aware.