Debit orders taken without my permission

On 20th March someone tried to take the following off my account and I don't know who they are. I never gave anyone permission. Mar: R79 REf. Mag zone MP- ********** ; R35 Phonebox PM- ********** ;RefR55 Ref Safe base Mp- ********** -R39 Ref. TEchtrace MP- ********** 5 21 March 05:00