Mini Sewing Machine — Not stitching clothes properly

I brought it from amazon at a price of one thousand. It worked good for 10-20days after that it's nothing stitching the cloth properly and thread breaks down during the stitching process this is giving me a problem at the present time i tried to solve the problem but this is too complicated for me to solve this out i recently checked on google about it but there also i don't get any solution for this problem so finally i decided to make complain i bought it in the march now it is not sewing the cloth properly and thread breaks down during the stitching process this is giving me a problem at the present time