Unauthorised Debit Order

I received an sms stating that money will be deducted from one of my accounts from the 1st of April for sdrive? I don't even know what you company's business activity is, let alone did I knowingly approve any of your services!!!??? <br> <br> Unless you can give me some proof of where I approved your service and a debit order from my account, we will be having ourselves a problem I reckon. I am also very interested in where you obtained my banking details to deduct money from - I don't ever hand this out?<br> <br> I expect this to be cancelled and sorted out with immediate effect.