King Koil Inferior Quality Beds

Bought a King Koil king size bed in December 2018, this will be my 3rd mattress and 3rd set of bases now as well. 1st mattress caved in on the one side i was sleeping, they replaced that, 2nd mattress has caved in on both sides where i have been sleeping, 1st set of bases broke,2nd set of bases broke after around 3/4 months of use. the quality of these products are concerning, i am not happy with the quality and the fact that i need to pay for the replacement of a product that the quality is less than satisfactory. whats more concerning is that king koil and sealy are made in the same factory and the bases are the same on both brands of these beds. i really do not understand how the bases keep on giving in and that this bed cant even support my weight for whatever reason, i do not want another one of these defective and inferior mattresses or bases that i had to spend my hard earned money on. Sleeping on a bed with 2 broken bases and with both sides of the mattress caved in is not comfortable at all.