They don't care

I recently purchased the USN Lipo XT product and after a few days of using it I started to break out. I immediately wrote to the company advising them of my reaction to the product and asked them to swap for one of the other XT products that I've never experienced bad reaction from. After some back and forth they basically defended their product saying they don't think it's the cause of my reaction. They suggested I try using it again. I waited just over a week for my skin to clear and used it again but smaller doses and yet again I started getting ****les. USN is refusing to assist. I get that I'm one in a million that has reacted like this to their product but it doesn't mean it's not the cause. Why do I develop ****les every time I use it even at low doses? So basically USN doesn't take responsibility after the purchase is done. They don't care.