Poor engine quality

We purchased one Tiago XZ last month. But with in a week the module got complaint and after a long discussion this got replaced. But again with in two days we found the engine get over heating, then we surprised and found that there was no oil in the engine. Then again after a long discussion my engine got replaced. This all incidents happened in the same month when I procured the new car. We are not happy with the quality of the products and mainly over the service centers irresponsibility. Suggest don't buy any TATA vehicle. Actually I am planning to buy new TATA inexpensive also. But due to this bad experience ,I changed my decision and looking for another brand.