Why is dt ignite using all my data when i have disabled it?

Thankfully I haven't had any dealings with DT Ignite but from what I have read it can be a pain to deal with. You might be able to firewall it with one of the free non root firewall Apps from the Play Store.
In one of your other post you said you have a S6 so you could check out Package Disabler Pro. It's a paid app that is supposed to help with bloat on stock Samsung phones.