Landlord don't want return deposit, what to do?

Normal wear and tear is NOT your responsibility, repainting after a normal tenancy is generally the landlord's cost, not yours, unless you painted the walls purple or damaged them badly. The problem in Malaysia is there's no dedicated deposit protection scheme like UK, so it comes down to your tenancy agreement and evidence. Did you take photos and videos on move-in AND move-out day? That is your best weapon. If the place was clean and you have proof, tell the landlord firmly that repainting is not a valid deduction. If he still refuses, you can file a claim at the Tribunal Tuntutan Penyewa (Housing Tribunal) or small claims, it's cheap and you don't need a lawyer. Many landlords back down once you mention tribunal.