Sleepy's  -  Mattress

We purchased a mattress from u 2 years ago. My back start hurting and my husband got neck pain. My doctor suggest using to replace the mattress. Can u please let me know if u have any exchange policy on my mattress ..I tried to call some different numbers but no one pick up the phone ... My email address is( [protected]@yahoo.com )and my phone number is [protected]. Thank you .