TV losing its channel memory (by 6 users)

Each time after I turn off my Tv it loses the position of all channels, so BBC 1 moves from channel 1 to channel 20, ITV 1 from channel 3 to channel 23 etc.

I have tried re-setting the channels, but as soon as I turn it off, it loses the position, always as above. Also I note on the menu, the country of use changes from the UK, to Austria, which just happens to be the first country on the list !

Can anyone help so I don't have to reprogramme the Tv each time.

Many Thanks Phil