Kurl-On — both mattress got diffected

I purchased two single foam matresses for my double bed (Costing 14k) the shopkeeper has given two different matresses for the same double bed, whose spngyness is altered. One is quite hard and antoher one got extremely soft, creating a complete discomfort.

I trusted on brand but this is really disappointing. Want you to get it returned as i purchased it in november 2018.