Unhappy Nedbank customer

Last week, a matured investment was paid into my Nedbank account. I then needed to move the money to another institution (that offered a better interest rate). After four days, two branch visits, and hours on the phone, the money was returned into my account because it was "over the limit for the transfer". I then had to "pay" myself to get the money moved, however, I could not access all of my money because it was over Nedbanks limit. So I was forced to repeat the process again. Except that now, Nedbank have made my account Dormant - due to inactivity! Is this a new strategy for Nedbank to retain customer funds?