Very bad trip with sa express

We have been in regular contact with sa express for 7 months to find out where the situation is. Sa express tell me every time "well received" or that the manager is not here today ... We would like to have an answer to our requests. Sa express canceled a flight without notifying us. We were forced to fend for ourselves and rent a car, which incurred additional costs, not to mention the stress caused because Sun City was a surprise for our daughter! We ask sa express now to see your manager so that he proposes us something correct!