No feedback on query logged.

I logged a complaint on 27 Feb ref no ***. To date all I got was excuses. Every time I enquire about my query they respond with your query has been escalated, our team will get in contact with you. The phone received with the contract was faulty right from the beginning. The 1st phone was returned within the first 3 months. Was replaced with a new one which did not last any longer. After that the faulty phone was replaced with a recon one. I had to return 4 phones up to now. The last one did not last 2 weeks and was hardly used. When I queried this I got the reply it was part of Cell C terms and conditions to replace a faulty phone with a refurbished one. I twice asked for a copy of their T&Cs which they said they will send to me. Nothing received. In the last 18 months I have been without a contract phone for around 7 months. I had to buy another phone eventually as I cannot work with a unreliable phone as it is crucial to my income. With one of the replacements my account went from R800 to R3500/month. They said they suspect faulty software on the phone. I asked for a repair report in Jan but to date I got none!