ABSA is failing in Customer support

ABSA has done it again. This is the 3rd time that the same ATM used (Bellair Mall), has not given us the full amount. The machine opens up so low, that it doesn't allow us to pull out the full amount. When I brought this to their attention, they said it's an ongoing issue. Today, I was told by the consultant that the ATM is unable to release that much cash. If that is the case then put a limit to withdraw. I attempted to withdraw R5,000 for my pensioned Mom, and I only managed to pull out R800. This is a total inconvenience, as my Mom needed the R5000, and now cannot withdraw anymore, as she has reached her daily limit. This whole process takes up to 7 days to resolve. What happens to her needing the funds today? If that is her balance available, how can she increase the limit? ABSA problems becomes the clients problem.