I hired a car through your website for Cambridge and did not receive a confirmation.
Do you have the reference number that begins with GBxxxx . ? And when did you make the reservation?
I can see that you just made the reservation and it is for now? This reservation is not yet confirmed, normally airports are the only locations that are confirmed instantly. It is best to book at least one hour before.
GB40204566010 and made the reservation at 11.05 for pick up at 11.30 hrs.