Yep, a lot of folks gripe about TC customer service when anything far more minor doesn't go exactly as they want in their time frame. But TC does and always has stood behind their products, even after the S&W take over and during the move.
Too bad they couldn't replace it with a Contender EO frame though.
Of interest maybe... the last version of the Contender EO frames (c. 1997-99) included a spot welded in block on the lower breech face just for extreme barrel bolt wear cases like your old frame. Wears out, simply replace the block.
L.