Investor Tax Responsibility for Missing K-1

I am awaiting receipt of an investment partnership K-1.  The sponsor has been difficult to deal with and delinquent in providing both financial and tax reporting.  The filing deadline is looming and I'm not sure what I should do about this issue.  I don't think the investment has generated taxable income in 2019, but really don't know what's going on other than I haven't received any distributions for 2019.  I don't want be exposed to any potential interest or penalties.  Is there something I can do vis-a-vis the IRS to alert them and thereby protect myself?