i didn’t get in the box material ..which was promised now these guys are telling that i’ll get only refund ..

i ordered electrobot raspberry pi 3 starter kit and got only case not any other in the box materials which was promised .. and after replacement issue remained the same now these guys are telling that i’ll get only refund .. product price has increased a lot .. when i ordered it was in offer price ..but now its price is 5200 ,i ordered it for 375 .. my order id is OD112714792046938000,complaint-id of flipkart is :-1807071157455209142 ..