Appalling treatment

On the 22nd of December, without informing me, Standard bank froze all of my accounts. After trying to pay for goods using my cards and being declined, I went into my branch to find out why. I was told that someone had reported one of my accounts as having received funds which had supposedly been hacked from someones account. The said transaction was a legitimate trade and i said i could give them proof of this, along with a selfie of the person holding up their SA ID document to prove that it was in fact the real person i was trading with. They refused to accept this information and said their investigators would look into it themselves. To date all of my bank accounts with Standard bank remain frozen and all my month end stop orders have bounced as a result of this, destroying my perfect credit history. I am a Prestige Standard bank customer and have been banking with them for over 25 years. I am totally appalled that this can happen, and that they have still not contacted me in this regard. When I asked why I had not been contacted they said because they had been unable to reach the person who had made the accusations, as he has not been answering his phone for the last 2 weeks. Surely this should tell them something! Is it right that someone can make an accusation like this without any sort of proof, and that the bank can freeze ALL accounts and funds immediately, and take over 2 weeks to resole the issue??? DISGUSTING SERVICE STANDARD BANK!