Vodacom don't care about existing customers

The contract with Vodacom uses two services - a cell phone contract (my son's phone) and a data ****le. This complaint is about the data ****le part of the contract ONLY. This contract matured sometime last year and here I also had a bad experience, but let me focus on the existing issue. On 18 December I spoke to Andile to upgrade the ****le to a better deal. He agreed to 10 gig with airtime. I again mentioned it is a DATA ****LE, airtime is of no use, so he offered 11 gig. On 14 January (Ref ***) I enquired with Lerato as I had 32 gig and this was much more than what was agreed only to be told that this is because of 20 gig promotional data. I also said that the statement shows airtime and I can't use it on a ****le. My bill was R218.73 and it should be R111. This is where things started going wrong. She logged a query to take it back to 11 gig and remove charge for airtime. With the next account I saw that I'm now charged R355.79. Vusi says I now have 5 gig plus 10 gig as it was not an upgrade, but a add-on!!!!!!!!!!. The initial 5 gig was there and added to it the 10 gig (supposedly 11 gig). He told me he can't do anything I need to speak to the upgrade department (Comet Technology). Mandla at Comet confirmed my upgrade discussion with Andile and said he will escalate the matter as they have to draw the call and then someone will call me. Nobody phoned and on 2 March I enquired again. Itumeleng from the sales area spoke to me and put me through to Salome at Elite mobile who said Andile will call me. Leah phoned me on 2 March and said they will reverse the 5 gig, but it will now be R149 for 10 gig (bear in mind there is an agreement entered into for 11 gig at R111). I declined and she undertook to escalate and call back. Needless to say nothing happened. On 10 March I spoke to Selma who put me through to her manager who undertook to call me on the 16th... she also didn't call back. On 17 March I spoke to Lerato Maponyane. She undertook to again listen to the recording of the 18th of December. She confirmed the agreement and Porcia Mogorosi at retention tried to resolve. She can't resoolve, refer to team leader Cheta Ramasela who will refer to Andile (going in circles). On 18 March Ntombi Ntwalo said she can see my account was upgraded on 17 January (how can it be upgraded if I was upgraded on the 18th of December!!!!! 7 April spoke to Promise Sehlhako who said she can see the 5 gig was reversed, will now request refund (Ref ***). 13 April went to Tyger Valley as I can't afford calls anymore. Kelebongile checked and said she can't do anything as the case is still open. Yesterday (21 April) a sales agent called me. My data account is due for an upgrade!!!!!!!!!! I almost blue a fuse and said I'm not upgrading something that was upgraded last year and definitely not since Vodacom don't care about existing customers. She confirmed I now have 5 Gig at R200 pm - the agreed 11 gig disappeared. She confirmed that R200 X 3 was reversed. Now how do you reverse something that was wrong, but you give it back (the 5 gig). What happened to the agreement of 11 gig at R111? It is incomprehensible how Vodacom treat me. Every time I speak to a different person and every time I have to repeat myself and the one hand doesn't know what the other is doing. Sales are not interested in queries / service and service just pass the buck. What do I want? Give me what was agreed on the 18th of December i.e. 11 gig at R111 and reverse any R200 charges that I consistently incur. How difficult can this be? Closing a case without telling a customer what happened doesn't mean the case was resolved, especially if you don't do what you are supposed and was requested to do. PLEASE DON"T CALL THE ****LE!!!!!!!!