Worst service I ever received

I booked in my tablet last week for the forth time. With the exact same fault.<br> It was returned twice saying that no fault was found. Finally after a year of paying R340 p/m for a non working tablet they found it is a battery fault. Which is not covered by warranty. <br> <br> Why didn't they find the fault the first or second time, or even the third.<br> <br> I would never buy a contract from Vodacom nor recommend them ever again.<br> <br>