You can remove them via your my o2
Or
12. To OPT IN to the Basics data Bolt On send a free text message containing the keyword "BASIC" to 21300 or call free on 2202 from your O2 mobile. To OPT IN to the All Rounder data Bolt On send a free text message containing the keyword "ROUND" to 21300 or call free on 2202 from your O2 mobile. To OPT IN to The Works data Bolt On send a free text message containing the keyword "WORK" to 21300 or call free on 2425 from your O2 mobile.
13. One month minimum term applies.
14. To OPT OUT of the Basics data Bolt On send a free text message containing the keyword "BASICOFF" to 21300 at least 48 hours before the next payment is due or alternatively call free on 2202 from your O2 mobile. To OPT OUT of the All Rounder data Bolt On send a free text message containing the keyword "ROUNDOFF" to 21300 at least 48 hours before the next payment is due or alternatively call free on 2202 from your O2 mobile. To OPT OUT of The Works data Bolt On send a free text message containing the keyword "WORKOFF" to 21300 at least 48 hours before the next payment is due or alternatively call free on 2202 from your O2 mobile.
15. You may OPT IN or OPT OUT of the service at any time. However the minimum charge is the monthly fee dependent upon which monthly data Bolt On you have selected. No refunds will be given.
Or live chat can stop them.