Best answer by Daniel Koodo
Normally, removing the data block is like removing any other feature.
To do so, go to "Other helpful links" > Add/remove/change add-ons > Your monthly add-ons.
Then click on "Change monthly add-ons" > in ""your current add-on(s)", click on the "X' to remove the "data block".
Please note that if you had the old free data block and you want to re-add it later, it now costs $2 a month.
Please let us know if you are still unable to remove the data block.