Rediffsupport — wrong product receive and not working properly

Address:

Jaipur, Rajasthan

Sir, I received my product. But it not working properly. It charging condition is very poor. It is only bad product.my product is 20800 mah power bank. It charge three point but it only charge my mobile 24% then power bank is dead. Please solve my problem. My order no is 11672758. And mobile no is [protected].. Please change my power bank i request to rediffsupport company. I received this power bank on 9 june 2015 but company not change power bank or not refund money to me. Compny say that they change it in 5-7 day but not change. I want to change and found new power bank in good condition and good Proper working condition. Please help me. I want to complain against this company and found best result as soon as.