Bajaj Electricals — bajaj 2016 mtb

Address:

FR. CHICO MONTEIRO ROAD, 403515

I had purchased this manual Microwave from Bajaj on 27/05/18.
A few months back had an issue with the Microwave which was not warming up. The technician came and replaced the part. Last two weeks we are having a similar problem.
I called the customer care number asd asked them to replace the faulty instrument which has given me problems twice during warranty period. If I am having problems so often now what will I do after warranty?