As per Notification 47/2019 CT , The taxpayer whose Aggregate turnover is below 2Crore is not required to file GSTR 9.
As you are not required to file Annual Return , but In my view you must put mail to GSTN that bills reflected in your 2A is not belongs to me & are wrongly reflected in my 2A , & contact your Jurisdiction Tax Officer bring to his notice by giving written complain letter.
GSTR 2A is not the only base on which you avail ITC. You might have given your GSTIN to any suoplier from whom you're buying goods/services of which you are not eligible to avail ITC, but still it reflects in your 2A. So, it's not mandatory to take action on each and every invoice appearing in 2A..