Incorrect billing

I had an 8ta account which was R399pm. I upgraded to the new uncapped wireless contract for R599pm. I received and SMS that I would be upgraded and charged R599pm which was in June 2015. I was charged for both accounts R399 and R599 but was only sent the router and sim end of June. I was Told the charged was for July and would be credited for the R399. Its now August and this month no debit order came off my account but I got a bill saying I owe R399 and R599 for June and July. Its been a headache to try sort this out.<br> <br> Its simple, I was upgraded in June but only received my equipment end of the month so I only started using the new contract in July. So I must be charged R599 for July and credited for June ( R399 plus R599) and charged R599 for August only. <br> <br> So unhappy with the accounts department as I have been a customer of 8ta- Telkom mobile for a long time and this one thing is really letting down the service.