********** account making my life hell

I have 9 contracts with Vodacom, in Feb I had a contract that was to be renewed, Someone internally from Vodacom renewed the contract and received a iPhone 6 128 gig, which is internal ***** of R10m. Only picked it up on a high bill which was debited to my bank account with extra (R1000.00), I went to westgate raise the matter was advised I go do affidavid which I did, return it to them to sent to *****. Never heard anything since 08 April 2015. I then called spoke to Sindiswa Jentile resent the documents & never heard anything from him. All I see is my account being debited and credited monthly. I drove to Vodaworld to sort it out and was told it will be. this trip cost me R150 petrol. So every month I go and choose my transaction at Vodaworld and pay and leave balance contract issue. this trips are R150 every time. so when I don't go I do no pay cause I am not sure what my bill is my lines get cut off. Right now my lines are off after so much stress I received from Vodacom. I wrote to icasa no answer since. I owe them R1500 & balance is R2900. No letter of apology no refund of petrol, no loyalty gift. all I get is a bad customer treatment.*** or *** help