Ok, last year I purchased a new Synapse SL in Liquigas colors. Well, the bike started making a clicking sound. I pulled the crank to check the BB and discover a crack in the downtube. Since I purchased the bike via the internet and I have no purchase receipt, I wanted to contact Cannondale directly to determine if they would cover the frame under warranty. After two attempts over three weeks, I've heard nothing from them. Do they actually return emails?