wrong details given

I app**** for an apartment all was approved , i then paid the rent & deposit to the account number that i was given, in the Month of August I paid my rent on the same account using my flat number as reference as I did the first time, I then received text messages that I did not pay my rent, then unpaid letter followed, I called Moses Thavheni he said I was supposed to use my reference number which I did not know, well September I paid on the 27. on the 4 October I received an sms that I did not pay rent, followed by another text with different bank details. I called I am told that I did not pay I asked they check with the reference number I was told the payment does not reflect, what's funny is that no one told me that there is a different account from the one used when i deposited the money first time, and the first time i was told that the money is not paid i sent proof of payment. so this time again they want proof of payment which I do not a problem with providing, but now I am not at peace because I am threatened that they will blacklist me. Now I have received a letter to vacate the apartment in immediate effect, How that's how Afhco treat tenants, they did even bother double checking their facts.