NO SERVICE

From the 1st of November mine and my husbands joox music does not play without data. VIP subscription has gone off and since emailing them from the 1st till now i cannot get a proper answer on how to fix this. I am at the point where i want to cancel and get a refund. Since we cannot use the app at all without using our data. My question that i was asking is why the songs that have been downloaded do not play now with out data. And still no answer. If this is the kind of service then rather cancel mine and my husbands joox account. It would be a pity as the music is really good but what's the point if you cant listen to it.