Bad customer service

I am a resident at east on 82 I have been without electricity for 2days because no one communicated with me that the banking details have changed and I made payment as usual to the bank account that I usually do but my electricity got switched off because banking details have changed and I was not informed, now I am being told my electricity will only be back when the payment reflects on their account and I have a 4montbs baby that's needs milk and I am getting no help from the agent and from the accounts department but there is contact numbers that I was told I can contact after hours or public holidays. Not happy with the service at all