Does not attend to complaints

The beds they sell you doesn't last the time they let you believe it will last. The first mattress we got from them lasted 2.5 years. A complaint ended up in months from then whereafter they eventually replaced that mattress. In January 2024 we received that mattress. In not even 3 month's time, it already formed a dent which one must sleep in. We lodged the complaint regarding the current mattress middle of December 2024. It's now 2.5 months later. They promise they will attend to the complaint, but NOTHING, NO response futher. This is happening at the Berdworthpark branch