LANCET LABORATORIES HARRASSING ME FOR AN ACCOUNT I PAID MONTHS AGO

Lancet Laboratories has the worst filing system ever.When I found out from Lancet that my medical aid will not cover my tests, I immediately made payment, THEY KEPT CALLING ME AND I KEPT SENDING PROOF OF PAYMENT VIA E-MAIL.This was months ago, but they keep calling me about an "outstanding balance"....WHAT OUTSTANDING BALANCE!!! EVEN TODAY, JUST NOW 20.07.2020 AT 16:50, I GOT A CALL AGAIN FROM THEM.

THIS IS HARRASSMENT AND I WANT LANCET TO STOP CALLING ME AND SUBJECTING ME TO THEIR POOR RECORD-KEEPING SYSTEM.