Switching is just a rip-off

I live on the Cleadon Park Estate, and this morning I tried to change my gas and electric supplier to save myself more than £500 per year.

Unfortunately, this whole housing estate is under the International Gas Transporter, which ties us to the most expensive suppliers.

I thought we could all choose who supplies our energy. This is another rip off, for all the energy users.

Has any other reader managed to change on this estate?

Name withheld