Useless repairs department

i have a contract phone with telkom mobile (8ta), ever since I got the Blackberry Q 5 I had endless problems with the phone, my phone went in for repairs in February 2015 and I am still waiting for feedback on the phone no one can tell me what is going on or where the phone is. the contract is coming to an end at the end of July and they only want to give me a credit for 4 months - what about all the other money that was paid and I didn't even use the phone for 5 months of the contract period. I am really getting sick and tired of this bad service. What could possibly take this long.... Shocking!!!!!