Makemyhobby.com — ordered and full paid for 2 items on 27th may 20 but not delivered yet

I had ordered water conditioners 1. Seachem clarity 250 ml and 2. Seachem pristine 250 ml on 27th may 2020. I had paid rs. 1803.34 including shipping and handling charges. (Vide order no. 266862) till date no items are delivered to me. No response through email or whatsapp after several massages from me. I also requested to cancel the order and return my money back to my source bank account but as usual that also not make out. Please help me out and help to return my money back. Thank you.