BE CAREFUL

i bought a car by them a month ago and problems since day two, I send it back didn't have the car for the whole December, they fixed it brought it back in January CAUSE THEY WERE ALSO ON LEAVE just for me to send it back the same day for the same problem, it came back yesterday after two weeks here it must go again today for the same problem IM DONE they told me last week the car is almost done they just doing a few tests to ensure everything is 100% now my question is what tests did they then do cause its the same problem for the third time. PEOPLE PLEASE BE AWARE OF THEM.