Irate Client - Refund

My account was double debited for the month of May. First d/o went off on the 18th May & 2nd d/o went off on the 26/05. On Tuesday, 29/05 I spoke to an agent Colin Mlambo who confirmed that the last my account was updated was on the 04 May and both d/o that was deducted was not reflecting on my account. I asked to speak to a Senior Manager / Team Leader but as usual they always to busy to come to the phone to assist clients. He said he will send his manager an e-mail to call me back regarding my query, well till today I am still waiting on that vital call. On Monday, 4th June I spoke to the agent named Babalo Poswa @ 3:35pm. The agent advised that my d/o of the 26 May is reflecting on my account however not the 18 May d/o. He went the extra mile to call the collections department and they confirmed that they received the payment of the 18/05 and it will reflect on my account within 5 hours. He also confirmed that once the payment reflects he will send an e-mail to the manager requesting a refund which I should receive within 24 hours. Well I am still waiting on that refund to happen as well. I then called again on the 08 June and spoke to an agent named Magaboke Mahalatji @ 2:40pm. He requested the reference number which the call was logged. I told him I never received a reference number and that the previous agent said that he will request a manager to ensure my refund is paid. By now both payments are reflecting and my account is in a positive. He logged a call provided me with Reference Number: ********** 4 and informed me that within 72 hours someone will call me regarding the refund. There is truly nothing much that I can do but patiently wait for the 72 hours to go by. Today, 14/06 at 10:08am I spoke to a agent, I'm honestly not even interested in taking agents names anymore and she confirmed that it takes 72 working hours excluding weekends which makes it 7 - 9 working days before someone will contact me. Is this not enough too make me even more angry. I think I've been patient enough regarding my refund. If the correct process was followed by Colin who was the 1st agent I spoke too my issue could have been resolved by now. Telkom your service is pathetic and it is 2 weeks that I am waiting on a simple thing as a refund to take place. My next d/o is due next week Wednesday, I wonder what story you going to spin me then.