With such a low mileage its doubtful any components are actually worn, or have been damaged somehow (eg: a dodgy brake disc change). The parking brake probably just needs adjusted.
Adjustment is easy enough if you want to DIY - remove a rear wheel to reveal a rubber bung on the bell of the brake disc. Once you remove that, you can rotate the disc until the hole is roughly at 2 or 3 o'clock position to gain access to the adjuster, which is a cog wheel you can rotate with a flathead screwdriver.
IIRC, you rotate the cog to the right to tighten the adjustment. Do this on both sides, but if the car is a recent purchase from a dealer....take it back and let them sort it.