Please Help I recently purchased 4 firearm (handguns) and now ATF is harassing?

me because of my ex-boyfriend and my sister being convicted felons. They took my firearms including the one I had purchased the year before. Please help what can I do?
Update: Sir thanks for your opinion but honestly if you can not help I would I appreciate if you do not response to my question I am looking for help not bullying I am already getting plenty of that. Thank you again for your opinion.
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