Klarna Bank Overpayment, No Refund, No Response

I made a payment through Klarna Bank but accidentally overpaid because I planned to make more purchases. They received the money, but since then, I haven’t received any proper response. I can’t get in touch with Temu or Klarna Bank, and I want the extra money to be returned to my account. They have my account details from the transfer I made. Thank you.
L**** J*****