Pathetic service

I booked for car rental through booking.com, the rental company could not assist me with the car on collection as they informed me about the high deposit amounts which was not mentioned by booking.com. I informed booking.com few hours after not being able to get the car and the agent told me he/she can't assist with the cancelation/refund. I tried to get the rental company to process the refund as they agreed that I should be refunded they referred me back to booking.com. I contacted booking.com again after speaking to the car rental company, and the agent told me they can't assist me as I am a day late .but few hours after the incident they still did not assist me. Really disappointed with how this matter was handled. I lost my money due to hidden costs and poor service by booking.com