Flipkart — not refunding my money

i bought a philiphs shaver in 10 days it stopped working i asked to replace but their were no more product so they told me they will refund me my money i gave all my bank details account details n customer care executive neha told me that i will get refund in 5 working days the reverse order was delivered at 13 may today its 26 may n still i have got no refund and my alll balance is wasted in calling executives till now atleast 150rs r wasted in calling and stilll no refund is given n these sites creates a thought in all online customers that online shopping is not safe