Capitec closed my working savings account with my salary because I did not answer my phone

I bought my month's groceries - and at the till when I wanted to pay with my capitec card... card not working. Logged into my bank account using my app on my cellphone... what???!! no account. No money. My savings account with my salary missing! Imagine how I felt.... embarrassed, worried, terrified.. what happened? Went to the capitec branch. Oh your tax free savings account matured and you did not answer your phone because you were working, so we cancelled your account. And sorry it is Saturday and the different department working with this issues are not open on a Saturday. Maybe by Monday or Tuesday they will call you. The branch could not do anything to assist and I am fuel-less, money-less, food-less, accounts not paid... because I do not leave the customers high and dry to answer my phone???? Why cancel my main savings account????? Why not just re-invest the tax-free account? The maturity date was Friday - and one phone call and then just cancel????? It is my salary that is "gone with the wind" ....Sorry you are not allowed to think about re-investing and you have got no right not to answer the phone when capitec is calling... really capitec????? I am highly disappointed. This issue is to be sorted out NOW!!!!!!!