Unable to pay

I was unable to pay for an item using my credit card 3 different times today (28/12/2017) When I called the call center, Lerato was very rude, she spoke over me and told me I need to get another form of payment. when I began to query why the payment is not working on their side I was met more rude attitude and told she cant help I must get another form of payment if I want the item. So my card works I just used it, but according to her I must find another form of payment and she cant say if there is an issue, if there is an issue shouldn't she be taking note of it as a part of the staff, then resolving the issue or making someone aware of the issue and not blow it off as "Find another form of payment". So what is the purpose of calling the call center ???