Can they just wake up

Dear client, pay instalment of R277 on your MTN acc this weekend. Pay@ Shoprite use ref ***. Bal.R 13 904,95. SSDA ***<br> <br> This is the message that I get from ssda everytime after they phoned me, and I have told them that I DO NOT owe any money. The previous time I wrote a report on hellopeter they wrote back its not mtn it was something else. This is NOW HARRASSMENT. CAN THEY PLEASE TAKE MY NUMBER AND DELETE IT. FROM THE RECYCLE BIN AS WELL.