State Bank Of India [SBI] — fraud transaction through upi

Dear sir/madam,
With a great grief, i have to lodge a complaint that i encountered with a fraud transaction with my sbi account at about 11 a. M dated 09/12/2018. I shared my upi pin unknowingly to an unknown person. My account has been debited by sum of amount rs.4827/-
Kindly help me out with some solution or guidelines to return back my money to my account.
Client number ([protected])
I m attaching sms that was recieved by me.