You are well past the INR (Item-Not-Received) deadline for eBay (up to 30 days past eBay's last estimated delivery date). In the future do not except a replacement, ask for a refund. You can then buy the item again if you still want it (and you will have INR coverage for the 2nd item).
If you paid via PayPal you have 180 days (just under 6 months) from time of payment to open an INR case.
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