Request for Credit Refund and Process Management in Clay

hey folks, this is just ridiculous. I bough 14k credits yesterday. Today, I made a mistake in one of my giant tables: I converted a checkbox to a number. Even though I undid the change, Clay reprocessed ALL 18k rows as a result. This ended up using up ALL my credits. I turned off auto update for the table to stop the jobs. But, when I turn it back on, it restarts the jobs. 1/ Can you please refund my credits? 2/ Can you please advise how to stop Clay from processing an entire table when I make a mistake like that?