missing cellphone in repairs

On the 22/06/2014 I handed in two blackberry cellphones 9360 and 8520 for repairs. I was called to collect the phones, but on collection I only received the 9360 as I was told that the 8520 was not insured so they did not fix it but it was still on the way from the repairs. I could not understand why the phone that was not covered were not send back immediately but they kept on giving me stories when I went to enquire about my phone. Then last year I got tired of waisting my money to enquire about my phone as no one calls me if I don't call them, I ask for the manager and he repremanded them as they couldn't produce evedance that they were following up the matter. He promised that the problem will be solved I was then called twice since then a lady asking me my acc. Details as she was following it up and that was the end another dead end.