Very poor service i faced. Review on General Tips on Customer Service

I want to share my experience with mydreamstore.com it is a site which provide printed tshirt shirts etc I ordered a tshirt of ?598 and they said they will give me within 1 week but they gave me after 2 weeks no worries when I received the product that was not good in quality and size too so I decided to Return and wanted my money back and I started mailing them they are very very slow they replied me after 48hrs and they didnot tell me the solution few days gone then they said you have to send the tshirt at our address which is in hyderabad by speed post I did it they told when they receive they will refund my money seriously I was tired of them I have been mailing them and whenever I used to call their customer service they don't pick the call ever after 1 month they refund my money of tshirt and they sent my speed post money in my MDS wallet its very crap