JDG stores poor online customer service

I bought a last year few months down the line the mattress was sagging, reported the matter to Sealy they refunded the mattress to the store in April. The store stayed for few months without attending to the matter and not responding to my emails, finally they fetched the mattress last week on the 11 October 4 days later I'm sleeping on the couch, no communication and no refund my emails again are not responded to