I called with an emergency, the front deadbolt lock wasn’t locking and I needed it fixed as quickly as possible.  St Louis Door & Lock response was super, they’ve answer my call right away and Adam came over in just 20 minutes, he managed to change the deadbolt and rekey the doorknob in order to match the new key, Adam was very generous and provided 3 new keys free of charge, I’d definitely use their services and recommend them to anyone I know!