Billing problem

I have mistakenly paid an amount of R 1 300 on the 27 November 2015 into someone's account (Mrs X). Mrs X does not owe home choice any money and she has passed on. Despite having the deposit slip and having explained to home choice on numerous occasions through their call center, they seem not willing to fix the issue. Instead i get calls to say I must pay account and ensure that my account is up-to-date. This issue has been going on since November 2015.<br> <br> I just want to know as to when is the matter going to be rectified.