Vissco Next review for Prime Product Badges Stickers

I couldn't view the label on our website and henced emailed them for help. What they did was instead of adding the "best seller" tag on one product, they did it on all the products across the website! I emailed them to rectify the same but suddenly they stopped responding. I disabled the plugin, even uninstalled it from my store. but they did some coding on my store & now we're stuck with the badges! Our website is live with thousands of visitors each hour. This is extremely disappointing!