After reading Roger's reply from Mr Grainger I really do not think that it is worth wasting time in sending any more emails to the officers.
Emails to the councillors (copied to the local paper) may stir them into questioning the officer's actions. The councillors after all have now endorsed the officers actions as policy. They will have to defend the policy to those that would elect them.
The councillors contact details can be found here..Weymouth and Portland Borough Council.