Unauthorised debits

The amount of R109 was debited off my account and I tried to contact your call centre team to assist me with a reversal but the phone just rings, I was on the line for more than 30 minutes and when I finally spoke to someone my call got cut off but we had already done the authetification process so I feel the guy should have called me back since he had all my details but he didn't , i tried to call again and nobody is picking up and this is unacceptable. You need to hire more stuff since customers cannot be expected to hold for more than 5 minutes. I have been with FNB for more than 20 years but if this is the kind of service you giving your clients I will most definately move to a different bank. Please reverse this derbit ASAP and block all the unauthorised derbits. I've seen a few complaints on the internet from other clients so FNB is aware of the ****s going around but nothing is being done about this!