meet and assist

I flew my 78year old mother back to Joburg on Sunday past, and i had arranged a meet and assist, she did not need a wheel chair, i assumed that should be fine as my mother can't speak english and she gets very overwhelmed when she is lost and confused, so the meet and assist collected her, but rushed off making my poor mom race behind him, she then had to stop she was out of breath and had to take her calming tablet, to calm her anxiety, after which the meet and assist let her rest and said he would be bak to collect her, but he hadn't returned, so she slowly got up and walked herself to the flight, but she was dizzy and unable.. a passenger with a baby helped her to the plane, i am so upset about all of this!! no regard for the elderly, only a flight attendant spoke to me on the phone and advised she would take care of my mother on the flight. I have complained to flysafair and the customer service advised" you will need to contact ACSA for complaint regarding a porter." so perhaps they should not offer the service if they can't take responsibility! and frankly i am so busy in my day to day to go and chase the airports, it was a bad experience and totally out of my hands!...