After you file

I am still trying to get my deceased fathers 2019 refund . I have complied with everything they have asked for , did a virtual visit, and also a visit to the Rochester NY IRS building . they kept saying everything is in order and I would receive my dads check in 9-11 weeks. Then I get this letter stating their area of the IRS does not deal with a deceased parents refund and sent it to another dept. The letter stated Iwould get a call or letter from them in 45 days. Three weeks later still waiting to hear from them.  I believe they are stalling on purpose and will be shocked to see an actual check from them. Never have I seen a more incompetent system before!