my contact storage is taking too space in my internal storage

[Android Central Question]

Size of My contacts storage is 319MB which is huge space by 1200 Names approximately
And also I tried to clear by application>contact storage
But problem is that the clear data button is no in function and it can only be seen
Pls solve it
My device is Intex Aqua 3G Pro
There are 3 gmail accounts, a fb a/c, an insta a/c, a whatsapp a/c, and two more accounts wgich are synchronized on my device
That's all.

 

[B. Diddy]

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[belodion]

2d later.

No response from the questioner.