Too expensive to use again

HIGHLY UPSET - I was charged $139.86 instead of $43.57 when I returned vehicle which is $96.29 extra fees. Called & your rep 1st tried to say it was taxes & when I explained that was too high b/c my entire rental was only $159, he reviewed it more. Then said it was convenience fee for not refueling vehicle upon return. I don't understand why I'm charged this when the counter rep who rented me the vehicle specifically told me NOT to refuel, that they have an assembly line return & it speeds things up. He even said the gas would be a better price. NEVER did he say this was an upgraded feature that cost money. NOW I wonder if I will be hit with an upgraded fee since the same counter rep said he was upgrading my car since the one I selected was not available. I have NEVER in my life returned a car without filling up but I know he specifically told me Not to & I even remarked to him that I'd never heard of such & was pleasantly surprised Advantage offers this customer service. I am now regretting that thought because I got the worst customer service in that I was SCAMMED. The rep completely Lied & when he said not to fill up. Worse is that I only used $5.50 worth of gas. Booking# 40291187 / CONF# WAD015212EAD for Jaime Sterba

Like: Ease of dropoff
Dislike: the 1.5 hrs it took to stand in line to wait for service.

Like: Upgraded car. Liked the car. Good overall price compared to others.
Dislike: Charged us for toll monitor even though we didn't use it. Our sales guy didn't want to take it out, so he told us there would be no charge if we didn't use it.

Like: The value proposition, the extremely efficient yet engaging salesman, the friendly return agent.
Dislike: Branding/Naming convention inconsistencies across the website & airport signage

Like: Employees extremely helpful
Dislike: Waited 2 hrs to obtain service another 1/2hr to obtain the vehicle