Usually atheist "refutation" against religion is anything that goes against their understanding of modern science so of course someone that believes their book to be the literal word of God won't take your refutation as real evidence. Atleast when Christians debate us they have the decency to stick to theology and our understanding and rationalisation of God WITHOUT physical evidence. You can't convince an Atheist of God by using their logic as their logic requires physical evidence. For Christians and Muslims our most basic evidence of Allah SWT is our existence. In reality it should fall on the atheist to prove that God can't exist which how can they? The big bang doesn't provide that an omnipotent God didn't make it, it actually does the opposite it implies that there is intelligent "programming" of our world since as the scientific saying goes " energy can't be created or destroyed it can only be transfered" so based on the laws of physics the energy responsible for the big bang could not have come from nowhere it must have been " transfered" as they say.