Absolutely disgustingly rude

Called to tell me I haven't paid even though I had just got off the phone with customer care to tell them to check my proof of payment which was sent. They agreed it was there and shortly after getting off the phone with them Donna Seiphemo called me and was terribly rude to me. She told me I hadn't paid and when I asked her to check the payment proof she refused and said bye in a horribly rude manner then put the phone down in my ear. Call center staff should be trained not to be rude. I would expect more from Cell C.