Microwave

I bought a LG microwave convection oven with an extended warranty. Two months into this warrantee the convection oven was faulty . I took it in for repairs in the beginning of February for the first time. Since then it has been back four times. When it broke the third time they promised that if it happened again the microwave will be replaced. It is now another 10 days since I've taken it back the fourth time and I am still sitting without anything.