Cellphone in repairs for 5 months due to store

My cellphone was given in during the month of October 2014. To date it is at a warehouse and I have contacted telkom numerous times however they have still not given me a reference number to make a deposit for a courier service to get my phone back. i have paid R400 for the last 5 months for a cellphone that i do not have in my possession. it was not even fixed becasue they did not contact me on my cell number that i had given as an alternate for me to either accept or reject the quote. the phone was sent in for a software repair due to the BBM app not working but the store now says the phone has 4 other problems it did not have when it went in. I have cancelled my debit order becasue this has gone on way too long. I require a refund for the time i did not have my phone. I last visited the store they said they would call me with a reference number to make payment to get my phone back but they did not and there is never any answer at the shelly beach branch. i am going to take this up further as the store staff has taken advantage of me becasue i am a young person.