I\n Am a 60 six-year-old handicapped woman? And I bought brand new tires at Mavis tire 5 months ago

I\n Am a 60 six-year-old handicapped woman? And I bought brand new tires at Mavis tire 5 months ago. It took a lot of my hard money to come by. I live on a fixed income today. 5 months later, the tire light comes on, I go to them to see what's going on, they inform me that, although the center is in the tire and you cannot get the tire without the sensors, they don't fix the centers as part of the tire, I have to pay extra and have the tires. Have the tire fixed with the center?And it can cost up where the $129 to get the part and 29 to fix it.I do not think this is right.I am very dissatisfied with maybe tires.And I've seen a lot of people going there older people in their ripping them off.This is not right