Master Lock Change Code I Have An LG-TM250 Flip Phone And Can't For The Life Of Me Remember The Unlock Code. Anyone Know Of A Master?

I have an LG-TM250 flip phone and can't for the life of me remember the unlock code. Anyone know of a master? - master lock change code

It has 4 digits and it was changed 6 months ago. The problem is that I am leaving the country for 6 months and the phone are set to lock automatically when switched on so that it can not not see the code with the phone! The company said it would pay for and for the service or buying a new phone, but I'm sure there must be a master code or a combination of keys, which can override security ... Suggestions would be very grateful!