Faulty phone, 4th time in for repairs

I have a Sony Xperia Z3 compact that I took with Vodacom on a top up contract. Within the first few months the phone had to be booked in for repairs. As soon as I received it back something else on the phone breaks. Today is the 4th time I had to book it in for repairs.<br> <br> I feel that Vodacom gave me a faulty phone from the start and now I have to sit with the consequinces by having to take it in for repairs every few months.<br> <br> The firs time the rear panel cracked, the second time the Wi fi stopped working and the repair center replaced the main board, the third time the phone switches off and will not power on again, now the fourth time I am having the same issue. The phone just switched off while I was using it. The battery was on about 30% and it does not want to switch on. I think the Board that was replaced must have been a faulty board or something.<br> <br> I am really tired of this. I just want a phone that works.<br> <br> Everytime My phone comes back from the repair center the rubber seal on the waterproof flap is more damaged than before.<br> <br> I need a solution to my problem. I am just tired of taking the phone in for repairs.