wow,, less than 3 months old. that's impossible for a new bearing to normally fail. or an very unlikely, but not impossible, coincidence.
However, when a bearing fails, it doesnt fail in a digital sense: fine now, totally dead the next sec. It's generally a gradual process. Even without dust caps or lube, bearings can run for a pretty long time before failure. Does depend on the type of a bearing, but a wheel bearing tends to be of the beefier variety. So, since they fail gradually, other knock on effects start occuring: wheels wobble, shafts wobble, play between bearing seat and bearing etc. These lead to minute increases in clearances that often increase the likelihood of premature failure of the new bearing.
A bearing mounted incorrectly can also lead to premature failure
the roads you drive on can have a big impact on bearing life as potholes and rough uneven surfaces speeds up the wear on the bearing.
but within 3 months? that's damn quick. Start with what type of bearing the original was replaced with. Ensure it's the correct type of bearing for the application as intended by the manufacturer. A quick call to a Daewoo service center will get you that info. Or google it
Also check the brand. Good brands are numerous eg SKF, Timken, NSK, FAG inter alia.
Next, the bearing location needs to be checked. Bearings must be fitted according to a spec: press fit, slip fit.. etc If that requirement cant be met, then the shaft on which the bearing sits is out of tolerance and needs to be replaced. See first paragraph as to why this can happen.
Next check that the person doing the fitting is competent. It's amazing how a bearing that's only slightly improperly fitted due to inexperience can fail prematurely.
Let us know what happened.