Booked airport transfer to pick us up from Paris CDG. Received an email from Welcome Pickups at 2am (we were due to fly at 6am) saying they have had to cancel our booking as taxis weren't allowed to access the airport that day. I looked online - Taxis most definitely were allowed access that day. When we landed, arrivals was full of Transfer companies and taxis were parked outside. They have taken payment and not yet refunded it as far as I can see. Also have 'closed our ticket' as far as complaining to them directly goes. Very very poor service and communication.