Vodacom Worst Service Provider

Vodacom has to be one of the worst network providers in the world. Their staff is *********** and cannot assist with anything. I have had a contract with them for the longest time and recently upgraded to a top up package to ensure that i get a FIXED amount debited every month and included insurance however every month they debit a different amount. I spoke to five different agents and none of them could tell me how much my plan is and why different amounts are being debited. On top of that i took my phone is for repairs A MONTH AGO after the camera lens got blurry and was advised that it was liquid damage. My phone has never been near or in water however they stupid warranty has made sure that every excuse is used as liquid damage (Liquid damage can be caused by: Actual water (dropping in water, holding the device against damp hair or skin), condensation, hand cream, perfume, excessive temperature changes, steam (kitchen, bathroom), perspiration (after exercise, warm day), mist cooling systems at restaurants, and many more.) How am I suppose to control the temperature? I submitted a claim at The Glen Vodacom and to date have received NO ASSISTANCE for a phone I pay for every month