SYSTEM ERRORS AND LACK OF PERSONEL

I went tot the Post Office today to find out why my postal box is locked......firstly there was one person at the counters saying is is weekend so ...suppose the world must come to a stand still. Wonder if Pick and Pay etc......also have that attitude. Asking why my postal box was locked when I paid R 360 in February/March they say they can not trace it because there is sometimes \system errors"that does not show the payment...now I must look for the receipt because they can not trace it because it sometimes happens that payments does not reflect ???? How on earth does the S.A. Post Office what to survive with this type of attitude...? Firstly no personnel secondly I must proof that I made a payment which I did (cash)...As I trusted that as an organisation they can NOT provide me with personal giving me basic information. And an employee would not make a statement like that if it did not happen in the pass...but surely they would say...the employee was not aware of this or that.....or made a mistake..... So if I do not find my receipt I can not access my post or I must pay AGAIN...i AM SORRY TO SAY THEIR SERVICES IS NONE EXISTENCE"""