Warranty issue and customer service

Hi, I purchased an Inspiron 1543 on Oct 27, 2015 from an authorized dell store at GIP Mall Noida and since then I have been strutggling with Dell Warranty team to update the warranty status under dell festive offers. They have updated only NBD warranty date to Oct 2018 sine I have purchased two years extended warranty, but all the other warranty dates are yet to be updated and they are not even replying my emails. The worst customer service I have ever seen. I will never recommend anytone to buy a dell product. I have provided everything they reqested already. My service tag #<ADMIN NOTE: Service tag removed per privacy policy>. My contact # are<ADMIN NOTE: Phone number removed per privacy policy>. Can anyone help? And specially Dell should not sell it's product through cheaters like Skope computers(A dell authorized showroom, GIM Mall, Noida.) They are thieves and cheaters and not have manners.