Of course you have the possibility to cancel your order (should you mean cancel in this context, as is still colloquially said).
The cancellation period is 14 days after receipt of the goods. You must inform us of the cancellation in writing, e.g. by e-mail (firstname.lastname@example.org) or by post.
Click here for our complete cancellation policy including cancellation form.
If you mean cancel in the sense of "stop", then unfortunately this is not possible.
You can find more information in the article "Can I cancel or exchange individual items from the order?