Avro Energy blocked my transfer as I had a debit balance of £78.92 on 19/05, due to the seasonal nature of the monthly payments scheme. My monthly DD is £82.86 and will be paid on 25/05. It is unlawful for an energy supplier to bock a transfer if the debt is less than 28 days old, but they did anyway. (Do a search for 'Citizens Advice Switching energy supplier if you’re in debt') They have not contacted me, they do not respond to email and the phone and webchat service is closed. They did, however advise me via twitter that the objection has now been cleared, after I paid the amount by debit card (I found this solution to see if others had experienced the same problem - and many have!). Avro also advised that I now have to restart the transfer and if it is not done before the next bill, the transfer may be blocked again as there will be a debt.