Used ZIP to go from airport in Lanzarote to Playa Blanca with 3 children under 3. Trip out worked well but on the return trip the driver showed up with on 1 baby seat. He didn’t believe we had booked and Pre payed for 3 child seats until I produced the printed receipt. Then followed a conversation with a manager on the phone which can be summed up by ‘ sorry but we can’t help you’. We had to take the transfer without the seats as otherwise we would miss our flight. So far there has been no attempt by the company to make amends or reimburse us, at least for the child seats we paid for but did not get. Unprofessional, unsafe and illegal.