Booked for 10 people to go to Avoriaz in Novemebr, departing the end of January. Due to their policy of maximum of 9 bookings (no telephone bookings available) I had to do it over 2 bookings. One 6 booking, one 4. There was confusion with one of the booking which was changed in November. Numerous phone calls to address this issue as their email takes over 48 hours to reply and a different person everyday. Dates were changed and booked everything then. Both groups agreed via telephone that it was all sorted. Had an email 3 weeks later to say half the booking was due. They had booked me on the wrong dates with the hotel (flights were the correct date). Again had to phone and an email trail correctly showed that it was their error, they apologised and assured me that it was all fine. Came to the week of the ski holiday and one of the bookings travel information had delivered. One had not, again phoned to chase up the failed document delivery, again was told it was all sorted and they were sent manually. Landed in Geneva on the day of travelling only to find out that they had only booked transfers for 6 out of 10 of the group. The other 4 had to wait until the company they hired sorted it, no thanks to sunweb. We landed in Geneva 21:30 and did not arrive in Avoriaz until 02:30 (original ETA 22:30). Arrived at the accomodation and everything was closed and could not have a room for the night despite our booking saying so. I had spoken to their rep at the hotel as they asked about ski passes, I stated we were not arriving until the early hours and could they leave the passes at reception. They agreed. Spent the first night in one room as a group of 10. It is now Tuesday (arrived Sunday) and I have heard nothing from sunweb regarding their errors, what a terrible company and their customer service is diabolical. All they do is take your money and pay other companies to do their work for them, do not waste your time with this company and just book it all yourself. They are uncontactable, will hide behind their T+C's and will be unaccountable for everything. Avoid at all costs.