Hi Sandip,
Welcome to the Mattress Forum! 
I’m happy that you’ve found us.
I’m sorry to hear that. 
You can read a little more about Magniflex in post #6 here and post #2 here and post #3 here and a forum search on Magniflex (you can just click the link) will bring up more information and feedback about them as well.
If you are considering buying a Magniflex mattress I would make sure that you confirm the quality/density of all the layers (see this article) in the specific model you are considering so you can confirm that there are no lower quality materials or weak links in the model you are looking at and make more meaningful comparisons with any other mattresses you are considering based on suitability, durability, and all the other parts of your personal value equation that are most important to you.
If you can find out the information in the article I linked about the type and quality of the materials in any of their specific mattresses you are considering and post it on the forum I’d certainly be happy to make some comments about the materials inside it and the mattress “as a whole”.
When looking for any new mattress, the first place I would start your research is the mattress shopping tutorial here which includes all the basic information, steps, and guidelines that you will need to make the best possible choice … and know how and why to avoid the worst ones.
There is also more about the most important parts of the “value” of a mattress purchase in post #13 here that can help you make more meaningful quality/value comparisons between mattresses.
As you can see … PPP (Posture and alignment, Pressure relief, and Personal preferences) is the most important part of the “value” of any mattress purchase but this will be unique to each person because a mattress that is “perfect” for one person may be completely unsuitable for someone else to sleep on.
Outside of PPP (which is the most important part of “value”), the next most important part of the value of a mattress purchase is durability which is all about how long you will sleep well on a mattress. This is the part of your research that you can’t see or “feel” and assessing the durability and useful life of a mattress depends on knowing the specifics of its construction and the type and quality of the materials inside it regardless of the name of the manufacturer on the label or how a mattress feels in a showroom or when it is relatively new so I would always make sure that you find out the information listed here so you can compare the quality of the materials and components to the durability guidelines here to make sure there are no lower quality materials or weak links in a mattress that would be a cause for concern relative to the durability and useful life of a mattress before making any purchase.
Phoenix