Warranty claim denied by Health Medical Daegu

I am writing regarding order #ORD-7763-DYD-5546 placed with Health Medical Daegu on April 13, 2018. I paid $72.34 for accessory, but when it arrived, I discovered is missing essential components. I've made numerous attempts to contact customer service, but Darrel B. and other representatives have not been helpful in resolving this matter.

I am writing regarding order #ORD-7763-DYD-5546 placed with Health Medical Daegu on April 13, 2018. I paid $72.34 for accessory, but when it arrived, I discovered is missing essential components. I've made numerous attempts to contact customer service, but Darrel B. and other representatives have not been helpful in resolving this matter.