On the 19/01/2023 I was contacted via email telling me I owed money to OVO Energy and that my monthly bill had increased from £40 to £71. I had never heard of OVO Energy before and believed I was with SSE as I had been for 4 years, no change to my contract was communicated to me. I was not given 10 days notice as per a legal requirement of the financial trade union. I called up OVO Energy to request some details of the change and why my account had gone into debt and they couldn't give me a straight answer, saying sorry 'cuz' that's just how it is. On the 18/04/2023 I was notified via email telling me I should increase my monthly payments to £111 otherwise I would go further into debt. I looked up on my online account, very difficult to look at but worked out I was only using £43.16 a month so didn't need to increase my electricity bill to the new requested inflated rate. On the 28/04/2023 I was emailed telling me my direct debit had increased to £111 with no notice of the change (As the previous email was a request for ME to change my monthly quantity). I called up OVO Energy to notify them I would be leaving them on this basis, the first customer assistant I called up said wait a minute and left me on hold for 30 minutes. I then called back and the person said no no you can't on this number with me, I requested them to give me the correct number and they gave me the number I had called them on then hung up. I then called up for a third time and told the person that due to the illegality of my account and direct debit change I was going to leave them that very same day, twice they put me on hold and said we can reduce your direct debit to your actual usage? This confused me as I was told by email that my rate was being increased in line with my average usage, even though it was only £43. After being on the phone for 4 hours I was able to leave this company and would recommend noone to ever go with this company based on my experience.