What to do in case of service not provided by online portal

I wants to say that I have ordered for Philips Trimmer QT 4011/15 worth Rs 1756 on 12 Jan, 2017 in red colour but you have sent me Philips trimmer QT 4000/15 worth Rs 989 in blue colour on 18 Jan, 2017. I have registered complaint regarding wrong product received immediately. You have completed your reverse pickup on 21 Jan instead of 20 Jan and provided me a reverse pickup slip already filled and even customer sign was done by courier person. Again, instead of accepting the mistake , your escalation team directly blamed me that your used this product once as we have got some tiny hairs on it. I clearly stated that I haven't used that product still they directly blamed me in rude voice and told me that we are sending your product back . And now you have sent me an empty parcel instead of trimmer. This is a planning by snapdeal to make customer fool.