This old guy is suspicious. He has rang me several times. He pretends not to know what is going on. I've blocked his number several times also but I am still receiving calls from him, he must be using a cycling number ( changing his phone number ) this is the only way Id still be getting calls from him. He seems not to like it when I ring back, this makes hackers nervous but they are in a quandry when you ring back because they cannot afford to block your number as they need to try and get you to answer your phone. This is why I never answer and then call back to check their reaction to receiving my call, It usually makes the hacker nervous. I think he is recognising my phone number as a call he's recieved before, i.e. he has not blocked my number because he's still trying to hack my phone, by getting me to answer one of his calls, that is all he needs to hack my phone. He hasn't a chance as I dont answer unknown calls plus I have no money for him to try to get his hands on. Im just a broke unemployed guy who cannot afford to pay for expensive internet security subscriptions. I think he's a incompentant hacker or very shrude hacker. I've given him a code to prevent a phone line from being used as a dummy line for hackers, so they can call others i.e. to get them to answer their phone. So as to use it to hack into the owners phone or computer, to steal banking information or their identity. He refuses to use the code. I think he's the hacker. The Police needs to check this guy out. He won't give his name or address. The code to prevent hackers is ##004#. This is typed in as a phone number. It stops third party call forwarding. Preventing hackers from using a number to ring another number thereby hiding their number, making the target think that the call is coming from the dummy phone and not from the hackers phone. I.e. it breaks the chain. All phone users should be using this code.