Question about tiktok etiquette

I did a stitch video just a few seconds with additional content on top for a business page. The original owner went ballistic because I didn't ask for permission....I didn't know I had to. The video was in support of their messaging and aligned. It was for a business page but was for awareness not promotion and no paid ads or anything their was nothing to be gained. They were upset they werent asked and they demanded compensation...I have stitched many videos and never had this issue. Did I do something wrong?