It said my refund was sent to my bank march 24th where is it

Please check with with your bank if they have the refund. Also, call 1-800-304-3107 to find out if you had an offset that affected your tax refund. Please see Treasury Offset Program  for additional information.

Generally, if the refund cannot be deposited it will be returned to the IRS, the IRS will send a paper refund check to your last known address on file with the IRS.

If you have verified you entered the right account information, contacted the financial institution, and two weeks have passed with no results, you will need to file Form 3911, Taxpayer Statement Regarding Refund PDF to initiate a trace. This allows the IRS to contact the bank on your behalf to attempt recovery of your refund. Banks are allowed up to 90 days from the date of the initial trace input to respond to our request for information.