The Saturday Star reported that Deidre Allen was shocked to see a letter she posted in 2002 returned to her as undeliverable, according to the report.
“This letter has been hanging around for the last 12 years and now it has come back to my postbox,” she told the newspaper.
The letter was a brochure she sent from Johannesburg to KwaZulu-Natal advertising a workshop she was hosting.
The letter raised concerns for Allen who still has not received as many as 14 Christmas cards from relatives overseas, the newspaper reported.
She has complained to the post office, but has not received any response.
Post office spokeswoman Nobuhle Ngapha said a supervisor monitored specific delivery routes if the company received complaints about non-receipt of mail.
“Our customer service centre keeps records of all feedback from customers and that is used to address operational issues,” she was quoted as saying.
She said international mail could be affected by the erratic schedules of cargo ships and delayed by means out of the control of the Post Office.