Disappointed

Hi, Please correct me if i am wrong but i believe i have a bank to make sure my money is safe with them. So i have an unknown debit order on my account that cannot be reversed how so i don't know. i have called in at Capitec and they told me they cannot reverse it i should call those people an they gave me a number to call. i have been calling them with no answer. I have have debit orders that i have made but this one is from an unknown company, how they got my details i dont know. i am so disappointed that they couldn't even try to block that debit order from my Account. Be glad to know that i will be switching Banks cause i will not stand losing money and not know where it goes, and the people i trust with my money cannot help me either.