Unacceptable flight changes and contact center simply not picking up the calls.

Flight reference number MPOBZB - from OR Tambo to Durban.

The booking is made for two elderly people. Date of departure was for Sunday 21 Mar 2021 - 16:45 The company changed the booking to 21 Mar 2021 - 19:00 I have been trying to contact the contact center to understand the reason for the change as this is not acceptable for two elderly people. The notice simply says go to manage my booking if the new alternative flight does not suit them. On the website under manage my booking there are other flight with times more suitable but the passengers has to pay for this change. I find this unacceptable and would have liked to speak to your contact center in this regard. Unfortunately on two occasions I have been placed on hold for more than an hour? How is this possible. If it is not too much trouble, could you kindly get somebody to contact me, I am the daughter of the elderly couple, to discuss a more suitable flight time, at no extra costs, as we did not request this change.

Kind Regards Renate Wilkinson ***