Samsung Mob GT 18262 — Mobile charging issues

Address:

Thane, Maharashtra, 421301

MY MOB IS SAMSUNG GT_18262 have problem for charging and submitted in kalyan samsung authorised center kalyan srvoday mall. they told me some wotk in mother board replace charging plate and replace battery i do it and pain Rs 2200
they told me mob checked they check and used but shocking news is mob not ok same as problem sumitted in gallery so whats check your employee
please suggest what can i do