Income Tax Department — no refund so far

This year i am disappointed with income tax department. They are not releasing my refund amount at all. It’s been 45 days since the notice 143 was received which showed the refund amount and sequence number. However there is no refund received. The status is not updated by the department on the website.

I tried calling cpc but they are not giving answers. They say it’s delayed this year or sometimes they ask me to validate my bank account.
I do not know what’s happening. If anyone has any idea please comment. I am depending upon this refund. The amount is in thousands.