State Bank Of India [SBI] — clarification of amount

Address:

Kolkata, West Bengal, 700012

Dear sir,
I am kousik das, my ca no. [protected] name compugraphics at surya sen street br., kolkata w. B. I received rs. 4, 00, 000/- from rafikul sarkar but this amount of rs. Not claimant from any of my client. Please clarification for this amount.
Please inform me from where the amount came from & also if this amount debit from my a/c this transaction not effect in my a/c.