Dishworld Refused to refund my prepaid 4 months after 5 min of subscription Englewood Colorado

Dishworld is a company that provides internaitonal cable streaming. I contacted them to get one month of subscription since they offer a month by month but I was advised to better prepay 4 months of service in order to get the device (Ruku) that is necessary for this service. However, when I realized that my smart TV doesn't even have their app, as they claimed. I called back 5 min later to ask for only one month as I requested initially. Dishworld representative (He claims his name is Ali and refused to indentify himself properly) put me on hold while saying that he will see what he can do. Then he comes back with the word "The company that ships Ruku devices has already received the order and we can't cancel it". I did ask kindly to explain how this can not be reversed within 5 minute of this transaction taking place. I aksed Mr Ali to transfer me to his supervisor and after a significant onhold time, a lady answered the phone under the name of "Sara UKQ". She basically just kept saying " I understand where you are coming from but no". 

Another important piece is thaat Mr. Ali charged me $21.36 which is supposed to be for an extra channel for 4 months WITHOUT disclosing the total cost. I found out about the cost when I looked at my back statement.

I did my best to resolve this issue with the the concerned party but they have shown no sign of cooperation and it seems that this is a common practice for this company to not read disclosure to new customers.