my nightmare with Absa

I hold a business account with Absa. I struggle to get the least service expected from one's own bank (staff at Pretoria North lie about ordering my bank card, business banker gives me a run-around and had to go into two branches to get a simple confirmation letter etc). But it is easier for staff at ABSA branch in Nelspruit (over 340km away from where I live) to assist an unknown individual(s) on 21 May 2019 to change the postal address on my account. How ridiculous and frustrating is this??? I hope ABSA conducts a proper investigation this time and inform me who and how my personal account got compromised by unknown individuals at a city very far from where I live.