OVERCHARGED!!!

Received a bill from telkom R3841.60 phoned it log a case ***1 on the 29 september 2015. Waiting almost 2 weeks for them to \solve"the problem on the 9th october they closed the query cause they could not get hold of me after they used a number that doesn't exist for almost 3 years. Phoned the 12th October to know what is going on then told me they closed my query and they credited me a 1092 they were suppose to credit me over 2000 so I logged another case with case number ***0 on the 12th october I upgraded my contract on the 27th August 2015 I have asked the lady at east gate what will the damage be if I Upgrade now and she told me I will get billed for my september and then get billed prorata for the 3 days in august. I said that is perfect lets continue then I received a bill for the R3841.60 where they billed me for the new device for august but keep in mind I only received the device on the 27th August I refuse to pay it and told them if they going to cut of my phone there is gonna be trouble they went ahead and cut my phone on tuesday everyday I phone them and all I get told the guy who my query was given to in back office didn't respond yet it's now almost a mo"""