My bank has very seriously breached GDPR and security for the second time.
It merged my account with the account of someone else with the same name as me, giving me visibility of all their financial and personal information, including correspondence labelled private and confidential. I could have stolen all her money.
I assume the other customer had visibility of mine but my bank hadn't said.
The first time my bank did this (two years ago and with the sane person) I was told it was human error and it would never happen again. I was awarded £375 in compensation.
I've made a formal complaint and I'm still waiting for an explanation five days later. How do I escalate this further? I think the bank needs investigating.