Spice Jet Airlines — miss behaviour by spicejet staff

Address:

Surat, Gujarat, 395006

I travelled from surat to delhi through spice jet sg428 on 19 Feb 2018 ..and on arrival I got my bag broken which happen due to badly treated by spice jet staff with my bag.due to it even I can't hold it proper .that was a really bad experience with spice jet ..how could I refer spice jet to any one if this kind of things happening .its really bad .spice jet charged high like standard service but treated like poor low class service