Unauthorized debit order

An unauthorized amount debited from my account on the 24th June 2024 with a reference number of wesbank. I called FNB and Wesbank and both these institutions are claiming that amount debited doesn't show on the system yet it does reflect on my FNB statement. I've been contacting FNB contact center with no luck and every time someone picks up the phone they choose to go silent and keep me holding on the line.

I want my money to be paid back and to stop this unauthorized debit otherwise I will have to close this account, it's clear my money is not safe with your bank as there was no debit order mandate for this transaction that took place from my account.

I hope to hear from you soon