Statement with no letterhead

My mother has been paying her Nedbank credit card after finding out on her own while trying to apply for a loan that she has been taken to the credit bureau. Jay Mothibi Inc became the debt collectors company for this. Yet here is the problem. When she asked for her statement she was given the run around. Finally when they did...the statement had no company letter head, no logo, no name to show who it is addressed to. No postal address to show if they can locate her if they wanted to. Can anyone advise if this is something to not fret about.