No customer service

I spent an exorbitant amount of money on the iphone 6 because we are made to believe it is the best on the market taken from vodacom which we also made to believe are the best service providers for us. This is utter ********. My iphone started giving me trouble and the best thing was to give it back to vodacare sandton to sort it out because it is still under warranty.i was told that it would take 7to 10 working days befre i get my phone back also that i may be charged because the phone screen was cracked. I made them fully aware that my iphone was faulty before i grazed the screen and that the screen was grazed and not cracked. Today being the 10th day from my book in i called to query my phone because i havent been contacted since it was sent for repairs. The women told me that i would now have to pay before it is repaired and i should contact vodacom repair centre on *** in order to be helped. I have been tryingto contact and speak to someone on that number since monday the 7th of march and thereare no agents available. I told the person at vodacare that it is impossible to contact that number and i was asked what mus she do. This is by far the worst service i have received.