Premium Hike without notifying Member

In June 2015, medscheme was tasked to do an audit on income for members. I submitted all documentation as requested before the due date. In July my premiums remained the same so I assumed that all necessary documentation was correct and in order. <br> <br> However on the 1st August 2015 I was billed at the highest premium not only for August but also for July 2015. This was with no correspondence from Medscheme/Bonitas with the member informing us of any outstanding documents or other to resolve the issue. This is unacceptable as the Debit Order was for R5175!!! <br> <br> Can someone please assist as a matter of urgency. <br> <br> Membership Number: ***