FNB failed deposits again and again

FNB seriously needs to work on their ATMs with regards to cash deposits. It's the 2nd time in 3 months that I have a failed deposit at the same branch. Most of my business comes with cash payments and hence I have to make deposits weekly/monthly and when my deposits do not go through it affects my business. The fact that there is no immediate solution makes it even worse, all they tell you wait 48 hours and you are left with the inconvenience from 'best bank'. There has be a solution or better way forward as this seems to be a daily occurrence across the country, Surely Banking Ombudsman need to have a look at this