if you're an indie, or if you managed to snag a deal where the copyright is yours, then the only thing to do is decide whether or not you would like to see some money, and if what your song is being used for is okay with you, given your state of needing that money.
but if you signed copyright over to your label, or signed a contract with a clause wherein the company can use your song for "promotions", then there is a definite concern. You may not have a say over it; so...always be careful about what you sign up for.