Capitec and their poor work ethic

I am so irritated with Capitec. Saturday the 10th April I received a message saying that my account was closed due to ********** activities. I went to the branch and was aked to do an affidavit and have my ID with me. I went and did and went in the morning. When i arrived at Capitec Bernmore i was send from pillar to post and later around 11:00 was told that my account is closed and i am welcome to open a new account with them. i asked for a reason and was only told that they are suspecting ********** activities. I dont understand why first why was i notified of this as i am a student and living at res and making money from selling second hand phones and that can be cleared with my mom, friends and sister and its also stated in my affidavit. I even attached my student card, but they are refusing to reopne my account. I am really frustrated about this and currently dont have access to cash that i can use as i am staying far from home. i dont even know which steps to take. I only received this reference number from them: ***5 my ID number is *** and registered with varsity college student number ***7.