Wasting my time AND then the unit IS STILL BROKEN

I handed in my husband's Samsung a while ago.It took very long to get some feedback from Samsung Constantia Park.Then,on 10 April they phoned me in the afternoon to say the unit is ready for collection.I asked her if they are open on a Sunday.She said yes & gave me the times.I told her I will collect it the Sunday.Got there the Sunday,there was load shedding.However,I gave them the job number,but they couldn't find it.They said they will call me as soon as the power comes on.The power then came on,but they didnt phone.I drove there again.When I got there,they then showed me on the system that they did another test-AND THIS WAS AFTER THEY PHONED & SAID THE UNIT IS READY, they also had to replace the ********.Why didn't they let me know sooner.They wasted my time 100%,made me drive up & down.How do you phone to say it's ready & after that,do more tests.I received a sms that the unit is ready,again.Collected it.I wanted to test it,so the guy,with out switching the phone off,just takes the battery out.Wow!After everything,the phone is not working.It gets SO hot even out of the charger & wont charge properly.All that was wrong initially was it did not read the simcard - THAT'S IT!