Elite Mobile de*****ing me

Elite Mobile called me and offered a tablet at R89 per month for 24 months, to which I agreed. This payment would be deducted together with my Vodacom account. Now they are using three debit orders per month to de***** my account for 'hotspotter', 'safetybox' and 'rescuebox' which is a lot of &*( and to which I did not agree. this amounts to R137 per month! Furthermore, they do not answer their phone, so how do I resolve this?