Capitec stopped my account without any notice or contacting me!

I have been banking with Capitec for the past 5 years! I have money going into my account as part of my small business! They make tons of money from charging me bank charges for all the deposits going through my account this month. They have now advised me that my account has been stopped as it’s been flagged for deposit *****. Are they not able to see the history of this account?! I have clients awaiting me to assist them with their orders instead they have stopped my account without and verification or contacting me! It’s public holidays in between! I have urgent orders that need to be delivered overnight and they’ve decided to stop my account without any prior warning yet they are still accepting money into the account??!!! This account is responsible for receiving payments from clients, making payments to purchase stock and delivering products to clients! What am I supposed to do now??!!! Now I have to leave my production and go into a branch!!! I’m already experiencing courier delays due to peak season! I cannot have another massive delay! I am so so livid with them!