Door shut to my face

I have a business account opened with Nedbank and recently quit my job so I may pursue it. My last transaction to the account was in December and I have passed the 31 day condition. I was then called by an operator Naomi whom told me that my account would be closed if I don't make a transaction and I told her that I just got a client whom I'm working with whom is expectant to pay around last week. The client however changed commencement days and requested that she make payment next week. I got an sms saying my account is closing and when I called to tell them about what happened I was told to find another bank in those exact words, my last salary payout will only reflect on Monday how else am i suppose to pay? I understand that there are conditions but that was like a door shut to my face. I'm really disappointed and now have to open an account with another bank just so I have a bank account the client can pay into