We are very disappointed with Welcome transfer. A simple booking Roissy Airport to Paris center would have cost 125 euros. Unfortunately, there was apparently a small problem with PayPal, as suddenly the invoice for 309 euros was displayed. Then the note that the route was booked twice. From us. Surprised, we wanted to cancel the booking. Unfortunately, there is neither a telephone number nor an email address on the Welcome Transfer welcome page. After a long search we found a page with the possibility to cancel the booking. But, till to day we have no confirmation of the cancellation nor a reference to the refund of 309 euros minus the mandatory percentage penalty. We just feel let down here and, sorry, that's not the best way.