Arrons rent to own summer, havanau and all redding ca employies sold me a stain mattress ca

Arrons in Redding Ca sold me over the phone a used mattress told me it was stained and now that I want to return the mattress they cant take it back because of said stain. I didnt stain the mattress I rented it sight unseen and was told on phone it was stained and now they are saying that the mattress was new and they wont take it back i stated that they said it was stained and they should take it back because they sold it to me that way. Now they are not answering my calls made sure that the delivery guys came out late enough that i could not get a hold of the main office. I am moving back east 6 am tomorrow and still have the mattress and they still expect me to pay for it