Samsung Galaxy Mobile S4 Mini - SHOCKING PHONE

i cannot explain due to having to abstain from using any ill mannered language how disappointed I am that Samsung Mobile has made such a WOW about their cell phones meanwhile they are the biggest lot of **** and the worst phone I have EVER had in my life - I hate my phone. The battery life - seriously ONLY LASTS for 8 hours, phone freezes on a regular let me repeat regular basis, keypad just goes ape ****and either types or freezes or picks up the completely wrong word, the call quality is atrocious, when making calls WHILE the screen is locked it randomly cuts people off and calls a random number NOT EVEN a person on your call logs.... It's honestly beyond a joke... The amount of times I have out of frustration wanted to throw my phone against a wall I cannot tell you and I am not the only person that is experiencing all this ridiculous continuous irritations - scary more follow suit of a friggen obvious well marketed yet worst phones ever. I am on a contract and my phone is not even 6 months old... Anyone want a phone for like R50 cos it's not worth the exorbitant amontillado Samsung sells them. PEOPLE I HAVE TOLD MANY A FRIE D AND FOE DO NOT EVER BUY A SAMSUNG - IPHONE 6 BIG UPS