I bought my Shoreham flat in Jan 2020. I was living and working in Brighton at the time, so it was convenient for me to allow the sitting tenant to remain in situ. I became her landlord, and I used the same letting agency that the guy that sold me the flat used. She vacated in April 2021, and I moved in to the flat at the end of July. I've used Octopus for gas & electricity ever since. I had an account with EDF when I lived in Brighton. The tenant must have used Bristol energy, who went bankrupt. I have just received a letter from credit style, addressed to 'The occupier', demanding £279.32. I'm not in a hurry to divulge my personal details to these shysters. They don't know my name, email address or phone number. What should I do ? The bill appears to be up until 1st April 2021, when I was residing in Brighton. I don't welcome the prospect of being visited by bailiffs............