This is correct. If the IRS stated to wait until March 15th before contacting them regarding your missing refund check, then you would need to do so. If you have not received your refund check by March 15th, then
you would need to contact the IRS at 1-800-829-1954 to initiate a refund
trace. The Bureau of Fiscal Service may need to review your claim before they
can re-issue your IRS refund check, which can take up to 6 weeks to complete.
https://ttlc.intuit.com/replies/4181364