DEDUCTION WITHOUT AUTHORISATION AND LIES

I have an fnb connect simcard with you. When I initially signed up I requested that my debit order goes off on the 25th of every month which is when I get paid. I do not have funds prior to that...I am currently at my withsend as I have a year old baby boy who needs milk a friend of mine transferred money into my account to buy my child milk until friday and to my surprise fnb connect goes and deduct. I called the contact centre to query this the agent shannon strooh tells me they cant reverse it...so now my SON GOES WITHOUT MILK FOR THE NEXT COUPLE OF DAYS seriously my son milk is more important then a darn simcard which airtime you load on the 1st anyway. I asked her if I could speak to her team leader she tells me he is in a meeting I advise her this was said prior with another incident and I hope she is not lying to me because that team leader could be sitting at his desk and I will take it further if I find out he was available and guess what ALL OF A SUDDEN HE IS AVAILABLE shocking which meant she was lying he was available and NEVER IN A MEETING...I WANT THESE FUNDS BACK INTO MY ACC TODAY AS IT IS MY SON DAMN MILK MONEY.