Economybookings.com's name is bookinggroup, my suggestion is to check if this is the company even if the name is different.
It is a big mess and a huge trap. Worst service of all. I paid the entire rental and later I had to add one more day. They would charge almost the price of a week to add one more day. I requested to leave that way. So they automatically charged more 77 usd (the original period, without the extra day). They explained me that those were taxes, not included before, but now included. They just decided to add the taxes. So I canceled the entire reservation, as I could cancel up to 72 hours in advance. They charged me more 33 dolars.
Some more facts about them: To receive an email reply from them you have to send more than 5 emails. To have the refund it takes 30 business days. Their prices are the highest in the market although they have good options at unknown rental companies that if you do a research are cheaper at their own website - besides these cheaper companies don't have airport counters.