Unjustified billing

Good day,<br> <br> I took out contract 500mg for R89.00/m with Vodacom. I was surprised when I called Vodacom for clarity on the message I got that sad I shared a number with someone and got told that I owe R2001.00. I had ask the consultant that my phoned should be locked once I reach R200.00 DATA usage.<br> I receive the phone on the 13th April 2015 but at 08h12 on the 15th the data was all used up.<br> On the 21st March 2015 at 00:00 I was billed R1319.49<br> On 22nd March 2015 R257.23. When I asked for the itemised bill I was told that I was going to billed between R17.00 and R22.00. Different information is given by different consultant when I call.<br> I have also asked for the phone to be soft-locked but I was still able to make a call the following day when I tested the phone and my bill had gone up to R2158.00.<br> <br> Vodacom kindly sort this mess out.