Truworths online payment system not working and untrained consultants (Ronel)

My boyfriend and I set up an account with Truworths and went online to purchase some sneakers. My first payment was simple because I made it through their website, but the second month was a nightmare because we were unable to log in or reset our passwords. We then sent an email to support, who explained that they had modified their site and were aware of the issue and that we should reset our password later. We can't reset the password a month later, and we can't drive to the store because it's too far away, and I'm self-employed and need to work seven days a week and take advantage of buying and paying online.

Now I called Truworths and inquired as to why my monthly installment had increased from R174 to R650 in less than a month, and I got into a dispute with this harsh unprofessional lady named Ronel, who should not be in customer service since she gets upset when you ask questions. The call went nowhere since she began responding to me like an enraged girlfriend till she decided to hang up when I purchased airtime to call. I'm sitting here with no answers with Truworths' irate consultants hanging up the phone, unsure whether I should just close the account and not pay because I'm frustrated. If I had the time to travel to the mall I would, but I don't, and I believe they take their online payment system for granted, forgetting that there are people who never go to malls to buy or pay, preferring to do everything online because it is both easier and more convenient. I also believe I would have gotten help or what to do alternatively had I talked to a more helpful consultant who was sympathetic to my problem.