Unfortunately this company is corrupt. You'll have to call relentlessly until they answer. I cancelled over the phone successfully. Leave a post with your negative experience getting a hold of someone to cancel.

Hello! This is from the Fabletics team. We know that this question was raised over a year ago, but we would like to address it.

You may cancel your membership at any time if you're not completely satisfied with your VIP membership. Our Member Services department can assist via Live Chat or by phone if preferred: https://www.fabletics.com/help/faq.

I've had no problem calling the number. This is the one I used: 1-844-322-5384. They will try to convince you to keep your membership though, so stay strong! Haha

It is very corrupt. I have cancelled my credit card and had a new one sent, so this fraudulent company can't take any money without my knowledge. I did manage to cancel my membership over the phone, but I still don't trust them
If you can't get them on the phone, I suggest you cancel the card you used to pay them, or if debit card, tell your bank about it.