Where is your previous repair receipt? That is the proof.

If you never ask or keep, then nothing much can help anymore. You may ask them check system as I believe they probably record base on IMEI code.

Or else It's time to purchase new phone.

sent my XZ to HQ .. coz' water get inside in USB port only(i wash it with all port is closed even i 'tekan' each port,and why only USB port?)..it's show pink colour.. i send it with warranty card..then,i get my XZ back a few days..she's said "we just change the battery,so charge it 8 hour" (like that la..) after one day(already charge 8 hour using dock),my XZ can't turn on AGAIN..don't tell me SUDDEN DEATH causes this problem .. it's already updated (.422).. i will send XZ back to HQ..i think it's motherboard problem..prepare to buy other phone..but what?i really love XZ boh..