Expert friend please help about spouse interview timimg at singapore

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Would please help me! Please share your ideas, just I can not tolarate my pain.
I first time applied for my husband (family class) from Bangladesh and I am permanent resident.
At that time visa office made phone call to my address (one of my relatives address I used) to check whether I am residing in Canada or not.

My relatives informed I am in Bangladesh. As a result they cancelled my application and refused it; as there is a clause to residing in Canada.

So, I came back Canada and applied again for my husband as new application. After one and half months from Singapore got letter that they will take interview and they will inform us date and location of interview.

Please advice me how long they can take to fix interview date if you have experience. I am too frustrated. Please help me if you have any idea about the issue.
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