I filed Q1-Q4 2020 and Q1 2021 941x in May- still have not received refund. I was able to get through to someone at the IRS (1hr 30 minute hold time). All he could tell me is that they had entered Q2, Q3 2020 and Q1 2021 into the system sometime in July. He couldn't tell me anything about Q1 or Q4 2020. He also was not able to tell me when I could expect the refund for the ERC credit. I have heard from others it could take as much as 4-8 months.......I am on month 5, so hopefully soon
