In plenty countries, repeatedly trying to contact someone after the person said "don't contact me" would be grounds for suing the contacting party. And given Amazon clearly doesn't give a fuck about sellers hounding customers, that would be my first bet.
So, people in this situation might be interested in actually replying one of those messages, with the following: "I will not remove the review. Please stop contacting me. Further contact will be understood as [harassment|disturbance of peace|etc.], acc. to [insert law in your country], and passive to litigation."
Also, unless the goods in question are expensive, resist the temptation to accept a refund, in exchange for removing the review. When you're dealing with dishonest sellers, it's well worth to get a small burden (no refund) to give them a bigger one (bad rep).
I've seen people accept the refund and then edit the review to not only make it clear that the product is shit, that the seller is refunding products for good reviews.
So, people in this situation might be interested in actually replying one of those messages, with the following: "I will not remove the review. Please stop contacting me. Further contact will be understood as [harassment|disturbance of peace|etc.], acc. to [insert law in your country], and passive to litigation."
Also, unless the goods in question are expensive, resist the temptation to accept a refund, in exchange for removing the review. When you're dealing with dishonest sellers, it's well worth to get a small burden (no refund) to give them a bigger one (bad rep).