FNB - How can we NOT help you

I've been with FNB since I was teenager. I'm working now and I have all my products with them but during this lockdown the bank has let me down. I always say I'll be with FNB till the end but that has changed. Unauthorized debit orders have slashed my account this month and whichever channel of communication you use FNB simply says contact the service provider. How can I when I don't even know who it is ? Why are you burdening you loyal customer in these difficult time ? ****** now know FNB doesn;t do reversals and they've started hitting our accounts hard.