Overcoming Door Knocking and Setting Appointments Rejections

I went door knocking and tried to set some appointments the other day. The three most common objections I get are

1. "Oh, I just wanted some quotes"

2. "I don't remember sending this in" / "I didn't send this in"

3. " I already have insurance and don't need any more"

Any advice on how to overcome these objections and turn them into a sale?

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