1200000rs in saving bank account

maine mere saving account me 2018 me 1200000rs jamaa kiye the.mere papa ne unke friedns se udhaar liye the meri shaadi ke liye.ab income tax department se text message aaya he un paise ki detail maang rahe he.ab muze kya karna chahiye?(Dear AXXXXR PXXXXL - Income Tax Department has received information about Cash Deposits of 1208000 relating to XXXXX1618X in FY 2018-19. However, as per records available, ITR for AY 2019-20 has not been filed. Please file your ITR by 30.9.2020. You can view transaction details and submit online response under e-Campaign tab on Compliance Portal (https://compliance.insight.gov.in) - ITD)