Vodacom treats clients terribly

I handed in my cellphone for repairs SIX months ago yo vodacom in brooklyn mall. I had a small cracked screen and a problem with the phone itself hanging. I recieved a msg to collect 3 weeks later and arrived to finf a shattered screen with pieces missing,no repairs done and a note that i hadnt responded to quote. I was told i had three free screen repairs and had i k own the cost would not have bothered.now i have a shattered unusable phone. I contacted vodacom chief liason manager who assured me theyd cover costs.my cellphone has been back and forth SIX times and each time i am assured it will be different and it comes back smashed. Vodacom repairs potchefstroom has been the least helpful at all,sending a letter stating the phone will not be repaired until i pay,for the shattered screen they caused. I am appaled and sick and tired.