Virgin Active ******** old clients

This is a classical example of when an organisation becomes too big and customer service goes out the window. As of last week virgin active claims that i owen my daughter card an amount from 2013 and blocked my card yesterday. I am well aware with the national credit act that if a debt is over 3 years it is supposed to be written off. My issue is how have i been coming to gym all these years without knowledge of this or both me and my daughter being refused entry?......Virgin active is a **** and really we should stop using their gym and use other gyms thats how they will go back to basics and prioritise their customers.