R3555 debited without justified cause

6th January my contract upgraded from blackberry talk 100 to smart s plan. From 06/01/15 til 01/02/15 I was billed 700 as the upgraded contract kicks in on 01 Feb . At the end of Feb I was billed R3555 , R200 for my two top up tablets R370 for my now upgraded contract . As well as an additional R2985 Iv requested the itemized billing. Which I'm yet to receive. It seems very easy to take money out of an account to Vodacom but a lengthy process complaints