Passengers with Reduced Mobility Rights

What are the rights of passengers with reduced mobility regarding the cases of denied boarding or travel class downgrade?

1. The Customer must disclose to the airline any special needs when booking and before purchasing the tickets.
2. ​The airline must take into account the requirements of those with special needs free of charge. Should the airline breach the bylaws, the customer must receive the equivalent of (200%) of the amount of the ticket.
3. If the Customer was refused boarding or downgraded, the airline must secure the first direct or indirect flight out of the airport to the right destination or compensate the customer with the equivalent of (200%) of the price of the ticket.