Trending @Infosys; The previous employer credited PF after leaving the company.

I joined Infy on 27th Jan and formally left my previous company on Dec 13th. Now my previous company made a contribution in pf for the January month as well. In January I also got a contribution from Infosys. This is certainly a problem and it's not even my mistake. I emailed my previous organisation about their mistake last night and I will inform Infosys about the same. Please help.