Poor Customer experience with online Payment portal Payflex

I happened upon this payment company on a eCommerce site in JHB. I was in a rush and did not realize that their service is a flexible payment plan service, resulting in multiple deductions from my card (4 deductions in one month). When I saw the first deduction I realized that there was a misunderstanding and asked to pay the full amount (via EFT), and then once it was settled, I asked that they delete my data set. This was done in early December, but still I am being hounded as this company did not allocate the money I paid or delete the data set as per request. I have contacted the eCommerce site that I used and reported the poor customer experience and confirmed that I suggest they terminate their association with this company. After my experience I will not refer any of my colleagues or friends to use this payment method. They do not properly explain what their service entails nor do they communicate properly how their processes work.