Back in 2018my ex wife left unexpectedly, literally left and never came back, come tax season I filed my taxes for the yr 2018 in 2019 as I normally would, but did married filling separate, because she wasn’t living in the home for more then 10 months, she skipped filing her taxes that year, the following year she used that w-2 claimed her dependent, and got her return, on my irs account it showed I owed nothing up until now? I have no idea what she did or how she filed but now they’re saying I owe more then 4 g’, when I reported all of my income, any advice would be great, thank you 🙏
