OVO is claiming SSE migrated a 644 pound debit to my account from 27 June. I moved to the UK and rented the address for the account on 16 April. My billing account from 16 April till 30 June shows 122 pounds. OVO/SSE erroneously added 644 pounds to my account. Now they won't resolve it. It is impossible for me to have a migrated bill of 644 because I lived in South Africa and never had used any energy or gas in the UK prior to my very first usage from 16 April - 30 June of 122 pounds. I paid 644 pounds to my account on 30 June as a credit and they added it as a debit and now claim it was from my previous account which I never had!