Debit orders almost never on time

I have used FNB for 20 years and in the last year my debit orders are seldomly on time and it's becoming worse

I get that of the debit order date falls on a weekend or public holiday it needs to occur on the next working day but there is no excuse for when it falls on a weekday or in the middle of a week - with 0 communication as to when they are delayed until

Ironically back in the day when I was on a gold account they always went off on time but now as a so call "Premier client" they go off days late but the higher fees sure come off on time

I have confirmation that all the companies who my debit orders are from submit their debit orders to mega tape and the like on time so the problem must be on FNB's side

If Discovery Bank can get debit orders right then I will switch over in a heart beat