Paid up Letter

They called my non stop regarding my Nedbank credit card, I was assisted by Refilwe Mthabela. I requested a settlement quote which she send me but after I paid the settlement amount at the end of March, it has been a nightmare trying to get my paid up letter. Every time I call I get told it has been sent to me but I haven’t received anything from them. They keep on escalating the matter to a supervisor but still I haven’t heard or received anything from them. I have made numerous follow up with no success.