TRYING TO ****** MONEY OUT OF ME 5 YEARS AFTER RETIREMENT

I am so disappointed and angry at Discovery Health because I used to belong to them for years untill I retired from a hospital in September 2019. In August 2019 my matron asked if I want to stay with Discovery and I said no, because I wouldn't be able to afford the whole premium, so I resigned from Discovery for the end of September 2019, when I retired and that was it, or so I thought.....NOW 5 YEARS DOWN THE LINE, SOME 'CLEVER' EMPLOYEE IS TRYING TO ****** R2 700 FROM ME STATING THAT I OWE THEM THAT. UPON INVESTIGATION I FOUND THAT, DUE TO GROSS NEGLIGENCE ON DISCOVERY'S SIDE, THEY ONLY CANCELLED MY MEDICAL AID THE END OF DECEMBER 2019...😡😡 MY PERSONAL EMAIL AND MY CELL NR NEVER CHANGED SO WHY WAS I NOT INFORMED 5 YEARS AGO. THEN I COULD HAVE TOLD THEM TO WAKE UP AND READ MY EMAIL THAT WAS SENT THE LAST WEEK IN AUGUST 2019, REQUESTING THE CANCELLATION OF MY MEDICAL AID THE END OF SEPTEMBER 2019!!!!! SOMETHING VERY WEIRD IS GOING ON HERE AND I ONLY FOUND IT OUT NOW THAT I WANT TO JOIN DISCOVERY AGAIN...🙄🙄 HOW CAN THEY, DUE TO THEIR INCOMPETENCE, WANT TO HOLD ME RESPONSIBLE???? THEY MUST JUST KNOW 1 THING, I'M RETIRED, NOT RETARDED AND THEY CAN TRY TO RIP SOMEBODY ELSE OFF......THE AUDACITY TO TRY AND COME AFTER ME, 5 YEARS DOWN THE LINE...🫣😡😡😡😡😡