Wheelchair assistance unavailable

I made a booking of FlyCemAir fortwo staff members, one of which is in a wheelchair. When the lady went online to book her special requirements, FlyCemAir's website stated that the person would have to be carried up the stairs as no lift at the moment. The said passenger is unable to be carried and requires a lift. We spoke to Mohammed at the call centre and he promised to get writing proof that there is a lift available. This was never forthcoming and Mohammed has never returned our calls or taken our calls when we phone the call centre. I then told that Martin (the chap in charge) does NOT take calls but I could email him. I have sent MARTIN, five emails and to date none have been acknowledged. The airline is willing to credit but at a huge cost to our company and also we then have to pay a fee to rebook. CemAir should issue a FULL refund as they were unable to provide the service that a wheelchair passenger requires. SHAME ON YOU FLYCEMAIR..