Stopped Account

I have a business where by I sell clothes and I have this one customer who always takes stuff on credit and pays at a later stage. Last year August if I'm not mistaken is when my account was closed. I went to one of the branches and was informed my account was on linked to *****ulent activities. I was then informed that I need to submit documents and so I went and got the required documents which was an affidavit and my certified ID copy. After a few days I went back and was informed that my account would not be opened. I feel like a ******** as my bank assumes I'm involved in *****ulent stuff. I am willing to go to any extend to prove my innocents however I keep being informed my account would not be opened.i have a business and that's my way of earning an honest income. I have been to the branch countless times yet I'm seen with a negative eye. All I want is to continue using Capitec, It would be great if the bank was willing to meet me half way as Im not a ********. I wouldn't be going back and forth to the bank if I knew about these activities.