ABSA a young black South African's nightmare

I have had an overdraft facility with Absa for a while now. Instead of them giving me notice for any reason as to why they are closing it down, they close it and take all of the money without my consent. Is this not a breach of CONTRACT? My contract stipulates that you are to give me 10 days notice before you close my account. On the 6th December someone called Mapule (credit controller) called me to inform me that Absa will be deducting an additional 300 per month on this account, we agreed and I've received an SMS confirmation with this. It's December, where am I supposed to get the money to cover Absas *****? Please can someone urgently get back to me??! With a solution