We bought a bed at OK furniture on the 20th of June 2021, by September the bed was already making noise when you get on it

We bought a bed at OK furniture on the 20th of June 2021, by September the bed was already making noise when you get on it. Now the metal inside it is popping out the bed itself hurts to sleep in. We contacted OK and they informed us that Restonic has no stock, how is that even possible? Restonic has always been a trusted brand however the quality of the bed that was sold to us says something else.