bank service off

Today was the second occasion I had in embarrassment. The first time I went to put petrol in my car and when I wanted to pay my card was declined..I asked for it to be tried again but again it failed.. I was so embaressed because I knew I had .money in my account,even tried the ATM to no avail.I than had to call a friend to assist in payment..and when I got home I phoned the customer care number..to which the operator just said to me that the bank is offline.they didn't notify any of its customers that we will be experiencing this.and than tonight again it happened..luckily my fiance had money with her to pay for the goods..terribly dissapointed in the bank..please let your customers know what u plan to coin advance..so that we don't stand in a queue and listen to people say..that's why I won't bank with a bank like capitec