Amazon India — Misleading Prime Membership

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Website:	www.vodafone.com

I hold prime membership. But most of my orders where not delivered on time. One or two times are fine, but Amazon keep on repeating. Find the below orders which i faced same issue:

1) Order#[protected]Placed on 30th June, Received today)
Took 5 Days to receive

2) Order#[protected]Placed on 20th June, Received on 27th June) -- Took 7 days to receive

3) Order #[protected]Placed on 12th June) -- Not received even after 10 days, so i cancelled.

4) Order#[protected]Placed on 25th may, got 29th may)

5) Order #[protected]Placed on 16th may, 24th may) -- 9 days it took.

All the above orders are prime eligible orders, but none of the orders i received on time. Worst service to the Prime customers. What answer amazon can give?
I request amazon to cancel my prime membership and refund me the amount(Rs.499)

Loop any higher officials if in case customer care couldn't solve my issue. Disappointing service.