Poor service and non accountability

I took my phone for repairs at Vodashop at Jubilee Mall at the beginning of February. I was advised that it will take 3 weeks max, now its been almost 3 months. The sad part or what annoys me the most is that every time when i call in to find out the status i get no assistance, its excuses after another. The worse part is that when i took it in, had upgraded my contract whereby i had it for only 3 weeks. This is unacceptable and i am paying for a phone which I am not using.