You wrote: “Do you have proof from the Quran that it was in vogue at that time? No. Mentioned in hadith and carried on by ancestors but not sanctioned by Quran so you are engaged in ancestral worship, not Allah!”
LoL! It fits better the other way around. Do you have proof from Quran that it was NOT in vogue at the time? Do you have a proof from the Book that it was not an Ibrahimic practice at the time of revelation of Quran?
You wrote: “Call to salat is in Quran but azaan is not.”
LoL, once more. Adhan is the name given to that Call you are referring to. You can call it with another name such as "call to salat" or whatever if you like. Who cares.
Have a good weekend.