My vodafone mobile phone tariff was changed without my authorisation or request. The rate increased from £37 to £58 per month. I don't use the internet, so just calls and texts using my old nokia and never have charges on top of my latest price plan. I have been attempting to get this resolved, but as Onecom will not backdate any change to when they originally changed my plan, I will not waste more of my time. I was advised to contact their complaints department, but as I have spoken to various departments and the answer (when I get through or they do actually make the promised call back) is always the same, it would be a further waste of time. It's nice to know these people appreciate and respect a vodafone customer of 15+ years