shocking service and business ethics

I am(was) for the better part of 15 years a client with FNB and have 5 accounts with them. About 5 years ago they offered me the premier banking status and even asked if I would like the private client status, which I declined at the time. About 6 month ago I tried to deposit just under 10K via a ATM. Strangely enough I could not do deposit it into a specific account. I thought I did something wrong and tried again. This time it worked and I was walked off. However instandly I wondered why do I not get a notification, and when I checked, the account still did not reflect the money. Next day the same thing so I phoned the help desk. Here they said it can take up to 24h to reflect, which is actually incorrect!! At the next phonecall I was advised to go to the branch. Here I was told the money was deposited in a different account of mine and FNB closed this account. I said this is impossible as the money was a deposit for material on a job and I need that money. The consultant said sorry, there is nothing they can do. There was no information of the closure of the acc, nor any reason. FNB claimed there is no regular income and that is the reason for the downgrade. This is also false as for the first time this account was used to pay in rent money from a house I recently rented out Till today there is no correspondence to why this ws done and one of there branch managers told me that recently more and more clients complain about ********* conduct by the bank and close there accounts. Maybe FNB made enough money with the merchant part of the bank, however history has shown, this is normally short lived