unhappy service

I took a contract from cell c davenport branch for Nokia Lumia 1320 and after 3 months the phone started not to charge and when i complained at the store i took the contract they said they will take it to their head office and they will sort it out and 2 months down the line i still didnt have my phone and when it did come back it was still not working and nobody bothered to tell me and i had to query myself about it and the manager Catherine Moses she was very rude unlike when i took the contract said the matters was out of their hands and she could not help me and when i asked how can i be assisted as i am paying R250 per month for something i dont have she said she could not help and cut the call. I was angry and confused becuase this was not fair and i asked myself lots of questions but no one could answer, to top it all i have been such a good and loyal customer to Cell C for over 3 years and not once did they not recieve their premiums on time but now this made me really upset and up until today no one has ever even bothered about me but every month i must pay for the phone which i dont have. This is really not right and as such a huge and respected service provider not good.