Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This is really disappointing

I intend to call the company tomorrow. We received our mattress topper two days ago. The first morning we felt totally refreshed with no backaches. This morning, my husband got up and told me his back was hurting again. I noticed a big dip on his side of the bed. Well, the topper is completely creased and sunken down (he's not a big man). It should have retained its shape, as my husband slept. Reeeeally disappointed! Well, like the saying goes " You get what you pay for."