Funsunsea not to Debit my money

They have send me whats app saying they gonna debit R399.they gonna debit on the 15/09/2020. i dont know becauuse they did not phone me.They maust not debit and they must cancel my bankingdetails . See their message says:THANK YOU MR MASHEGO FOR JOINING FUNSUNSEA. YOUR DETAILS WILL BE SENT TO YOU AFTER FIRST DEBIT OF R399 ON 15/09 AND R399 15/10.ENJOY YOUR BENEFITS .OUR OFFICE NUMBER IS ***. That is bad.