Five fnb atms, at the only fnb in town, all out of cash almost every single Monday

It is actually becoming a huge frustration that you can't withdraw an ewallet or cash at westonaria pnp centre every other Monday morning. That branch has five atms , and all five have ZERO cash, on a Monday morning? How? It's the third time this happens to me and I'm actually quite fed up. The only fnb branch we can access anytime in the whole town and you get such services. Please correct this cause it is a frustration.