Recently I lost signal in my post code area. I am with Vodafone. My daughters phone has the same problem. Being used to 100% signal in my location for many years I queried this with Voda. After many phone calls and an email to their CEO Vittorio Collao, I have finally been told the reason for this problem which has persisted since 9th of July. The mast in my locality is being masked by recent tree growth. This prevents line of sight with other relay masts in my area. The engineers when inspecting the site discovered through their monitor equipment that due to this tree growth, over 50% of the calls being handled by that mast had failed so they turned it off. No notice was given and the numerous operators I spoke to had no knowledge of the problem. The trees belong to the local council. A meeting was taking place between them and Voda on 5th of August to try and resolve the matter.The real problem I have encountered with Voda during this time is their abysmal and indifferent customer service. One operator even said that I should get up and go out if I wish to use my phone as it is MOBILE!!!Also she went to great pains to point out that Voda do NOT have to guarantee a service. I asked then does that mean I don't have to guarantee payment. At this point she threatened me with legal proceedings and possible damage to my credit rating!!What can be done to make these providers live up to the expectations of their customers? Is their any means where a contract can be cancelled when services deteriorate? Incidentally I pay about £100/ month for my 4 contracts and have done so for many years.