What went wrong? Getting back to your existing customer with their renewal quote would be a good start. I'm on the EV5 contract at the moment until March 1st. Over the past two weeks I have placed two requests for a new quote and been on Whatsapp asking and all I get is "we will be in contact". If Sainsburys doesn't want my custom, Octopus Energy is more than happy to sign me up.
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