Hi Susan,
Thanks for your review.
I'm sorry to hear you're unhappy with your mat. Turtle Mat backings are anti-slip and engineered to minimise movement as much as possible; however we cannot guarantee there will be no movement as there are so many different floor finishes and carpet finishes and piles.
Sadly, I can't find any details that this issue has been raised to us prior to this review. Please kindly email us on info@turtlemat.co.uk and we can help further with this.
Kind Regards,
Turtle Mat - Laura