Budget Car & Truck Rental

Rent a small car had for two weeks extended it twice, they claim I didn't extended it, when I turned back in they told me it was 401.98 but when I look at paper they charged me 908, then I looked at my bank app and they actual charged me over 1000.00, I call customer service and they won't do anything, told me that I never extended my rental when I had conf# and would not refund me. But when I notice the amount I asked the women names Barbara why the amount was different she would not answer me and give me any answers...so I suggest no one ever rent from this place..