*****ulant debit order from Straton VH

So i received an SMS saying on 20 March 2018 form this number ********** 873 "Your MBS247 R126.69 debit will run 25 Mar 2018 sold by Straton ********** 093 ref STRATONVH0STR ********** ********** 325.Respond for help" I dont even know who this company is or what product they are selling, where on earth they got my number or bank details, I phoned them and their number takes me to voice mail. The debited my account without authorizing that. This is ridiculous and **********.