Virgin Active membership canceled by Momentum

Its the first of December and i wanted to go attend a spinning class at virgin active, when i swiped my card they said my membership has been canceled by Momentum. <br> <br> I phoned my parents and they were not aware if anything either. No information has been given before just merely canceling my membership and i paid a joining fee for this. <br> <br> I expect to hear a valid reasoning for thos and also do not feel like its fair that i need to oay a joining fee again if they canceled my membership without informing us on a reasoning or even just informing us about it in any way?!!