T-Kameez — order exchange

Hi . I ordered a lower and it was not of my size and also I wanted to exchange and the courier boy, pickup the order and also I did not get any the refund many days has gone and wanted to order a new lower, please help and also it's urgent to be happen, I'm very disappointed with the services and also make calls to the customer care and no one picks up the call and also sometimes its not reachable.