It is not possible for an Apostle to abuse, insult or criticise any of the Apostles of Allah preceding him and attribute moral vices to him. No Apostle can tell lies and concoct stories to prove his genuineness and authenticity. It cannot be that a truthful Apostle makes a date-bound prophecy, at the Command of Allah and on the basis of a Divine Revelation, and proclaims it to be the criterion of his genuineness and the Lord shows him up as a liar and an imposter before the whole world by proving it false. In the light of these observations it can be safely concluded that even if the chain of apostleship had not been terminated and the Apostles were still being raised up, there could be no possibility of Mirza Ghulaam Ahmad being a Divine Messenger and a Prophet. Almighty can never raise up anyone as His Apostle who is so glaringly lacking in the ordinary qualities of Human rectitude.
Divine inspiration can, in no case, come to such a man.
The Devil, of course, can inspire him. Now see for yourself the quality of falseness and sinfulness in the life and character of Mirza. Allah has brought His Faith and Sharee'ah to perfection through the noble Prophet sallallahu alayhi wasallam, and, then, also took upon Himself the responsibility, of it's preservation till the Last Day and made all the arrangements that were needed for it. He proclaimed it in the Qur'aan and the noble Prophet sallallahu alayhi wasallam, too, stated it clearly in the Ahaadeeth. Thus, it is an article of faith with the Muslims all over the world that the chain of Apostleship has ended with the raising of Prophet Muhammad sallallahu alayhi wasallam and no new Apostle will be sent down anywhere.