Arrogant response to an injured 69 year old at Checkers Lifestyle Tzaneen

My mom got injured at Checkers Lifestyle in Tzaneen. It took time for the management to attend to her. She was assisted by another customer and only then did the management get involved. She was then taken by an ambulance to Tzaneen Mediclinic to be attended. The following day She was swollen and Thabo Marpa the Admin Manager said she must bring an invoice so that they can submit. I called because I'm far from her and I spoke to him and he even gave me a whatsapp number to communicate with him. He doesn't respond to messages and he is quite arrogant with his answers. Iv bn waiting since Friday for a response from him for guidance because my mom is not able to go and get the invoice and I called. I will b able to go on Friday because like I explained I'm far. He did not respond. My simple question was to find out if there is a time frame for the submission of the invoice. Seeing that he is not responding I asked him again today and his response was a one sentence asking if I have the amount. I expressed my concern that he does not respond to issues and asked for a number of someone who can assist. No courtesy of a greeting on the message. He still didn't give me a number to escalate my simple question. I then asked him if I should write to Hellopeter to get the number and he responded anytime. He is rude and no empathy to a 69 year old who was injured at a store he is part of management. My concern is well my mom is on a medical aid but obviously there are limits and if she exhausts the limit we are still in March n the year is still very long.

What would hurt Thabo if he gave me an answer or a number to someone I can ask. Checkers has not contacted my mom since the injury