I will this installment debit for my Kerby vaccum show up during my mortgage closing in four days?

To make a long story short.. A salesman rang my doorbell, I let him in and he proceeded to fascinate me with a real life infomercial!! So he gave me a great deal, I signed for an installment plan of 32 months. Next thing I know they were running my credit. Shady, I know... However, I'm mostly concerned that this new $2000 dollar debit is going to change my credit to debt ratio, and possibly cancel my closing. :( I called their customer service twice, and both times they told me the "inquiry" might show, but the actual "debt" "loan" will not, for 3 months when they report. I have 3 days to cancel, but i'm worried that there will be a turn around time for that as well... so I'd be screwed as well. Please help...