Help with LGH440n

I have go a Lgh440n spirit it was on the 3 network uk but couldn't afford to pay my bill because lost my job anyway I think they have blacklist my iemi or something ? it will not connect to any networks with other simcards ? when I try 2945#*440# any part of the menu it says (this phone is permanently locked and can not be unlocked ) it would be great if someone can help fix it and how do I get the phone to enter diag mode ??




Thanks

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