Street Style Store — Cancellation of order and poor customer service

I ordered men's regular fit shirt on 12th of June as a gift for my friend for his birthday (i.e 18th June) but i found out that it will be dispatched only on 19th of June so i wanted to cancel my order before it get dispatched because I won't be needing after 18th of june but there was no cancellation option on the order page. I tried to contact customer service from the number they have provided on the page but they didn't pick up the call. And may order got dispatched already but till today i.e 23rd of June, it's still in Delhi according to the tracking details. So kindly help me cancel my order and get a full refund.

My order no is #7749874