I’ve never heard of Muscle Booster until today, when I received a notification that they tried to take £29.99 from my debit card. I did purchase a 30 day workout through the Yoga-Go app who I’m assuming is the same company? Either way, this wasn’t a subscription and there are no subscriptions showing in that app or through my App Store account. I’ve never sign up etc. through a website, cannot find anything in my personal info relating to them. Reported to my bank as fraud.