Company using my content without permission.

I help manage my wife’s YouTube channel. She makes content for mother’s and parents including breastfeeding content. A shady breast pump company is using a 5 second cropped clip of her from one of her breast pump reviews in an instagram ad promoting their breast pump without her permission. This clip is from a completely separate breast pump than theirs and they are trying to pass it off like she said these things about their pump. I’m going to go do a bunch of research, but wanted to see if anyone here could steer me in the right direction. Thanks for any help!