Bad attitude

I booked a flight for my mom on the website for 22 May from Johannesburg to Plettenbergbay. Firstly the eticket was not issued immediately, only a day later after I had to enquire about it even though I had paid. On 10 May I received an email stating a change in departure time which I communicated to my mom. Then when I dropped my mom off at OR Tambo an hour before departure time, she was informed that the flight had been cancelled. On enquiry at the ticket desk, the lady was rude and unhelpful, trying to claim first that they had tried getting hold of my mom without success, then claiming the phone number was wrong, then saying an email was sent. The only email ever received was the one with change in departure time. Eventually my mom was rebooked on the Thursday flight with a promiss that an email confirmation would come through. Again we first had to enquire before an eticket was sent today only. I have sent an email to Cemair stating my disappointment and annoyance but until now no rely to my email. This has been hugely inconvenient for my mom and I needing to reschedule a number of appointments, arranging a dogsitter etc.