The one hand does not know what the other is doing

I gave my tablet in for repair end Feb sometime and was told its fixed and can collect. Once collected the tablet did still not want to charge in full! I immediately phoned the store once collected. They said i can bring it back and not wait in the que as it takes forever to book a device in!!! I went back on 2 April and now i am told i cant be pushed to the front of the que by Angelica otherwise the other customers will be upset now i have to wait again!!!!!! After they didnt fix what they were suppose to do!!!! The call centre also phoned me to ask for service feedback and they also confirmed no waiting!!!!! But yet let me waist my time again!!!!! Our whole household has sumsung devices about 8 of them. But i will be changing to Iphone much better service there!!!