Transmission failed because SSN already used...it appears you are trying to file the same return twice.

I tried to submit my tax return yesterday and I was given an error code stating that it appeared I was filing the same return twice and that my social security number had already been used? Then I find out that I accidentally somehow made two accounts using the same email, however I don’t remember ever filing a previous return for 2020. I can access both accounts and neither of them show me that I have filed and won’t let me put in my finalized return. I received an email saying that I should reach out to customer service if one of the accounts aren’t mine, but I am not sure what to do about getting my refund as quickly as possible. This is really important as I am struggling like a lot of other people during this pandemic financially. I appreciate any help you all can give me, thanks.