Myntra.com — Ordered Items not delivered

We have ordered seven items of max products through Myntra app on 17th October (order no:[protected]-8979603) and we received a max product on 24th October which was not ordered by us. So we raised a complaint and item was returned. On the cover our invoice 12921LD[protected] was correctly given. I think some packing mistake has happened band that item was returned on 27th October. We raised the complaint through their help desk several times. Meanwhile they have initiated refund of two items but remaining five items/ refund not yet received. Kindly look into the matter.