Customer support and Credit Control Failing to give Feedback on my Account

I am still waiting for Glocell (Burger and Rene) to get back to me so they can fix the bill. They've charge me for the Pinnacle Unlimited Plan (that only started on 1 Sept) on the 7 September (that is the bill for 1 Aug - 31 Aug ). But on the the 1 August - 31 August i was still on the Infinity Plan. I've received my new handset only on 23 Aug and the data for the Pinnacle Unlimited Plan on 1 Sept (20G). They Charge me twice for my 2G and over charge me for the insurance. Please get the manager to call me back ASAP.