Unexpected payment from my account

So I recently check my bank account and I saw a unknown transaction from dellmkt at 07/17 (still processing) with the same price as laptop I purchased at 07/02 and you guy receive my money at 07/12 and I didn't purchase anything after I received my laptop at 07/13 (yes it's very good run everything perfectly and i don't have any complaint about it). Can you explain it please ? Thank you.