Repaired phone was overheating, it's been a month waiting for them to come & get this phone now it fell into the sink with water

My phone was damaged, they took more than a month to come and fetch it, when they brought it back it was another hassle. I informed them 2 weeks into using the repaired phone that it was heating up and what was it doing to my hand all that phone radiation. They promised to send someone to come and get the phone so that they can test it again. It's been 5 weeks of waiting for them while I was using the phone. I needed to use a wet cloth to hold this damn phone. Yesterday the worst happen when my hand released and this hot phone fell into the sink with water.