Double debit

Good day, I complained regarding a debit that went of twice on 26 November, got an email with reference number *** NF that my complaint was forwarded to covid loans department and that they will contact me. It's been five days and nothing. I don't appreciate the double debit because I am not in arrears. It somehow puts a damper on other my other debits. I have been banking with fnb for long and I am not happy with my services