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In this paper, we present a model based on $A_4$ discrete flavor symmetryimplementing inverse and type-II seesaw mechanisms to have LHC accessible TeVscale right-handed neutrino mass and texture one-zero in the resulting Majorananeutrino mass matrix, respectively. We investigate neutrino and dark mattersectors of the model. Non-Abelian discrete $A_{4}$ symmetry spontaneouslybreaks into $Z_{2}$ subgroup and hence provide stable dark matter candidate. Toconstrain the Yukawa Lagrangian of our model, we imposed $Z'_2$, $Z_3$ and$Z_4$ cyclic symmetries in addition to the $A_4$ flavor symmetry. In this workwe used the recently updated data on cosmological parameters from PLANCK 2018.For the dark matter candidate mass around 45 GeV-55 GeV, we obtain the mediatorparticle mass(right-handed neutrinos) ranging from 138 GeV to 155 GeV. TheYukawa couplings is found to be in the range 0.995-1 to have observed relicabundance of dark matter. We, further, obtain inverse($X\equiv\frac{F^2n}{z^2}$) and type-II ($X^{'}\equiv f_1 v_{\Delta_{1}}$)seesaw contributions to $0\nu\beta\beta$ decay amplitude $|M_{ee}|$, whilemodel being consistent with low energy experimental constraints. In particular,we emphasize that type-II seesaw contribution to $|M_{ee}|$ is large ascompared to inverse seesaw contribution for normally ordered(NO) neutrinomasses.

Scalar Dark Matter in $A_4$ based texture one-zero neutrino mass model within Inverse Seesaw Mechanism