Hello, I fully paid for TV license for 2023 in May now I keep on receiving harassment messages from the company by the name HC

Hello, I fully paid for TV license for 2023 in May now I keep on receiving harassment messages from the company by the name HC. They continually ignored my emails with the proof of payment attached. The emails were sent to Moleboheng and Zanele who works for HC. But still I continue to receive SMS from HC saying that I must pay the TV licence.