A zero star will be more suitable for this company.
My property terminated SSE supply in March 2021. Bill settled within a month, thinking case closed for good. Little that I know a year later, May 2022 I received a big invoice demanding a whole year of consumptions which was not even supply by them . Good try SSE!
Spent 1.5 hours on the phone transferring from 1 department to another to close the account. That's how efficient this company who provides the UK nation power n gas.