FNB ATMs ALWAYS OFFLINE

FNB seems to be at the fore-front of banking, however, it would be nice if their ATM's were the same. On more than 3 occasions I have tried to use the ATM at the Greyville Branch (on Stamford Hill Road) in Durban to do deposits between 07:30-08:00 and this is the time that FNB decides that 3 of the ATM's need to go offline for "maintenance" purposes. Thus only one ATM works and the queue is a mile long. Surely "maintenance" can be done during the hours that the ATM's are NOT frequently used. It's most frustrating to go there only to find that most of the ATMs are offline. And yes I can use other FNB ATMs but this is most convenient and surely banking should be about convenience.