My c905 has had so many problems with it in the last 4months, some problems I have tolerated as I wasn’t really happy about not having my phone for 3wweks while they repair it, but it got so bad I have sent it away 4times, on the 3rd time they replaced it for the same model but a brand new one, but surely enough after a few weeks that one went faulty, and I have heard that that type of model is just faulty.

my warranty will run out eventually and I will be left with a broken phone, I can’t keep sending it away, all together I have been without that phone for months, and have had to tolerate annoying problems from it-I would like it to be replaced with an different but equal model that is not known to be faulty-I paid for a contract with that phone I would like to be able to use it hassle free.
What can I do?