Dissapointed with Sony

Got Sony Z1 compact on contract from Vodacom, a year ago, now no longer want to charge, Vodacom as my service provider took it to Vodacom Advance Repairs, TO MY SHOCK they could not repair it found liquid in it, how, I don 't know nor understand, that phone in my possession has never contracted water....and it is water resistance, correct me if I' am wrong......now must continue paying a contract without a phone...Will never use Sony ever again...Battery does not even last.....Bye Sony...