Base Caving In 2 months after purchase!

Towards the End of August 2016 I bought a base set from Dial A bed at the Glen. 2 months later the base started showing problems. Started caving in. I reported the matter and received a customer inspection notice on the 27 of October 2016. When I made a follow up a couple of months later as this is hardly a used room the bed is in, I was informed Dial A Bed the Glen was closed and all the staff was moved to Dial A Bed Lenasia. I finally managed to get hold of the Sales Person who told me to send him proof of purchase. I did. This was May 2017. I received an "sms" not email then advised that I still need to call the factory to organise for the base to be exchanged as the inspection proved that it needed to be replaced. This i did. Now forward another 8 months later, the base has officially caved in. This room is now used by my son. I've never been so embarassed and ashamed to be associated with your brand with such extreme service. The SANBS would not approve such a product. So, I urge you to treat this matter urgently and applying TCF, treat me fairly. I need a response within 2 working days of receipt of this complaint. Service Report Case Number is 157937, Request ID on the invoice 56974. please keep everything in writing.