Payments

I am a visa credit card customer at Woolworth I lost my card in May 2016 and I contacted the customer service at the store within 2 days for the delivery of the new card and they told me that they no longer deliver the card at post office I must go to one of the their selected stores for card collection of which they were far from my resident so they gave me an option to pay my account in any Absa branch and that is what I do until recently I made my last payment on 21 Dec 2017 and emailed a proof of payment on the same date and I even received an acknowledgement from them about the the receipt of the proof of payment but to my surprise I received calls day by day telling me my last payment was made in Oct and for me this makes me sick and tired Please help me in this regard Thanks