Vodacom, Ackerman's and Foneyam

I took a Vodacom phone at Ackerman's Golden Acre Cape Town the phone was freezing and I took it back to Ackerman's they told me the phone will toe 21 days to repair they are going to call me on the 21 day I went back there they didn't call to check my phone they told me it's not back yet I must wait for a call I then went again to Ackerman's the manager gave me my phone back the phone was not repaired not fixed still doing the same thing Vodacom Ackerman's and Foneyam are ruining my credit record because I don't have a phone and it's not being paid the manager is blaming foneyam when I called Foneyam they told me the shop is responsible for the repairs and now Ackerman's manager says it's Vodacom I am so disgusted with what they are doing to me ruining my credit record with my phone not being paid I still don't have a phone