Appalling service with a bad taste

I upgraded 10 July 15 to a new contract. Very first bill was incorrect and I was charged almost double of the contractual agreement. <br> Phonecalls as follow:<br> 14/7/15 - Waheed - promised resolution withing 24hrs.<br> 16/7/15 - Kealebogile #*** - feedback will be provided within 24hrs.<br> 17/7/15 - Simon #*** - enquiry incorrectly logged. re-route and feedback within 24 hours.<br> 14/8/15 - Sesuthu #*** - enquiry incorrectly logged.<br> 17/8/15 - Mabasa #*** - refund due to client. Sent to billing department.<br> 18/08/15 - Miliscent - enquiry still open. should be finalised within 24 hours. She will send e-mail to speed up process.<br> 19/8/15 - Kagiso &amp