Amazon India — non-delivery of my product even after expected date crossed

Address:

East Khasi Hills, Meghalaya

My last two order still not delivered by amazon.I complaint 2-3 times regarding this but they are just giving assurance but no improvement in the status of my order.They are using bad courier service.Earlier order delivered by amazon is within 5-7 days but nowadays it will take 20-30 days.If they are not able to deliver my order then they can cancel my order.Only frustration is left with buying on amazon. My both order no. are:[protected] and[protected] both order place on 2nd january 2015 today is 18 th january but still it is on the way.Please solve my problem atleast amazon can use good courier services...