stupid misstake with DB encoding

[mihy]

Hello!

I have VPS. I asked to VPS controllers change my VPS locale, but they do:

update pg_database set encoding = pg_char_to_encoding('en_GB.UTF-8');

As I know pg_char_to_encoding('en_GB.UTF-8')= -1 :(

Therefore my DB is damaged...

if I use psql;

FATAL: invalid database encoding

If there any method how I can fix it???