WORST SERVICE PROVIDER

This is the worst service provider EVER!!!! They upgraded a contract unknowingly to me, after I specifically said I do not want to upgrade. I have phoned numerous times, I have reference numbers, to set this right and everytime they promise to get back to me because they have to sent the query to "the back office". Well the back office never return the query. It has been 6 months since this phone has been upgraded with lots of promises that they will fet back to me. Today the lady said this is their peak time and they can only assist us with this query once they can find someone to collect the phone that was delivered to us which we never used because it was a wrong upgrade. They say "all calls are recorded" but they dont have time to listen to these calls and sort this problem. This is very bad service. And this is not the first encounter we had with Vodacom.