No refund- despicable customer service

I paid more than R700 into an incorrect AVON account, I have been asking for my refund since 17th November 2017- everyday I am being asked the same question....with reference to your email dated.....please send bank letter confirming bank details and proof of payment...guess what this is sent every day...I have the proofs and still AVON hasn't actioned the refund. this is day light *******, they prey on innocent people in the hope that we will eventually give up. I want my money...I am not asking for charity or AVON money...I am asking for what is rightfully mine.