Discover Credit Card Complaint

Discover Credit card department,

Billing disputes California

I joined - - as a consultant the first week of - 2016. I charged $150.00 & $680.00 on my Discover credit card. About a week and a half after joining they sold the company to - -. I requested they cancel my request and give me a refund. To date I have not received the merchandise or a refund. I disputed the charges with Discover who stated - - provided documentation that - left the merchandise at my front door. I have not received anything and have been trying to get my money back since - without success. Please help