Intimation u/s 143(1)


(Guest)
Dear Experts My mom have got intimation from income tax deptt u/s 143(1). My mom is having source of income just from the interest on FDR. As initially my mom had no PAN so the bank deducted tax on interest @ 20%. later on she applied for PAN & submitted it with Bank. so they asked that they will provide manual statement of deduction of tax @ 10%. But the bank didn't provided that till 31st july & not even after that. So she filed ROI declaring income of Rs. 192340 though she had not that much income. As the return had not been revised u/s 139(5) till date & she have received intimation u/s 143(1). so my question is whether now ROI can be revised claiming the refund of tax deducted on interest income Plz reply urgently. Thank you so much.