Sleepwell — esteem - firmtec (n) - brown mattress

I have purchased two mattresses of the above said type of size 78x35x150 each on[protected] from sleepwell dealer m/s ace comfort gallery gp - 8, pitampura delhi vide invoice no. 474. I am sorry to inform you that the mattresses are so bad that we have started getting back pain. These are not at all firm, sags wherever you put pressure. I am not at all happy with this product and want immediate replacement with a better harder product. I hope you will do the needful as early as possible.
Malaviya

Thanks