Old Stock

I bought a bed at Lewis Pretoria North a restonic bed, i noticed that the bed was damaged and i reported this to the store, i phone them everyday, the guy Chris whom i spoke to said that they will replace the bed, this was 02 Nov 2017 on the 28th Nov a inspector came out to my house saying that the bed was old and that it was discontinued in March 2017, and it didn't even have the restonic feet, now lewis wants me to buy a another bed and pay a bigger installment?? this is nuts???????