Dischem Mall of the South turning away people who are registered for Covid vaccine.

I Went to Dischem Mall of the South yesterday at 2pm for my Covid vaccine. I was told that I must come back today because they had reached their limit yesterday. I explained that I am 49 years old and the lady told me it's not a problem because they are allowing that age group now. I went back this morning at 7am, only to be told that they are not allowing 35 to 49 years to be vaccinated until 2nd August, where I have an appointment or not. I was turned away and told to come back on 2nd August. I then saw a sms from Clicks that they are allowing walk-ins. I went to Clicks Alberton City and got vaccinated without any issues. My niece who is 36 years old went to Dischem in Fourways this morning and she got vaccinated without any issues. It seems that Dischem Mall of the South are making their own rules at a time when the sooner we all get vaccinated, the better, but they don't care.