If you want a shady experience and get ripped off, come here! They go by several different names - Payless, Renta car, and Economy. Three people standing in line before us experienced the same frustrations so we knew what to expect. We showed them our reservation through Kayak and they tried overcharging us double what we booked it for. We did the math and told them that it didn't make sense and he recalculated it, agreed and gave a new price which was still not the same as the reservation price. He said it's because the website shows in USD and not in CAN $! He "upgraded" us to the mama van but we had to pay for it but we were tired of waiting and arguing by that point so we just took it.
Get your boxing gloves on if you do end up booking with them.