Virgin active continues to generate arrears even after cancellation

While i loved being a member of Virgin Active. Their cancellation process is highly flawed. I have tried calling to resolve this with no avail. Last year I cancelled both my and my wife's Virgin Active accounts and for some reason there is now an arrears on my wife's account? My daughter cancelled hers and paid in the shortfall and now 6 months later, there is an arrears of R89.00. Virgin active has now handed over the account to MBD who i cant see to get hold of either. Can someone from Virgin Active please contact me on my cell previously registered with my account under Royston Wyatt ASAP, should someone from Virgin active actually read this complaint.!