Money Guru: What to do if income tax refund is not received?

ITR Return Filling: After filling the income tax return, people wait for when their refund will come. This time also the last date for filing income tax returns has passed, but many people have not received refunds yet. The returns of some people are getting delayed due to some valid reasons. At the same time, there will be some people who may have made a small mistake despite filing the income tax return. It is a mistake not to verify ITR. It is possible that the bank account is not pre-validated. Have you made this mistake too?