Banggood.com — Items missing and no return/refund since a month

Address:	JINGTAI STREET HAOQUAN BUILDING JICHANGDONGMEN ROAD BAIYUN DISTRICT GUANGZHOU 510400
Website:	banggood.in

[protected]- escalation number
Order Number :[protected]
Order date :[protected]:28:28
I ordered the above with the description
1 xGateway, Wireless Switch, Temperature & Humidity Sensor, Motion Sensor, Wireless Door/Window Sensor.
What I received was only Motion Sensor.
Customer care has promised multiple 24 hours for resolution and been almost a month and no resolution.Please help