It is nobody's duty to convince anyone, not even that of Allah's true Messengers.
Qadianis are deft at ducking the issues, subtly changing subjects, slipping like fish, altering their own words, misquoting and outright lying. They are taught all this by their community leaders. They will NEVER give you the original books of the Criminal Mirza Ghulam Ahmad. Well, I have all of them for 30 years when they were trying to convert me and the policy was not very strict then. Now they are busy making changes in their, and especially, his silly books.
"The Devil will never hesitate quoting scripture."
“The devil knows how to quote scripture to his purpose!"
1. Have you read HASHISH FROM QADIAN by Dr. Shabbir?
2. :-) Do not excuse me for this question: Dear brother, a "Mirza" not naming Qadianiat, rather calling it Ahmadiat - are we dealing with a Q or someone sympathetic to Qadianiat?
I know my post is a bit rough, but I seek no apologies.
I trust you will be honest and I will stand corrected.