Once again Pathetic Service Received

After checking my debit order on my bank statement I noticed that Vodacom's debit order had increased. I called the call centre, I spoke to Desiree Mashala, who was very unfriendly and basically told me that the amount differs to what I have on my bank statement and I need to go to a Vodacom shop and take my bank statement with me. I asked her why I cannot fax or email my bank statement to her, she said she needs to physically see the difference on her system before she can assist! Wow, Pathetic. So now I need to be inconvenienced and go to a Vodacom store as the call centre cannot assist! I fail to understand the logic!!!! I am so tired of Vodacom and patiently await my contract to end! How can there not be a procedure at the call centre for a situation like mine??