Rain - Most Pathetic service I have ever received!

I recently signed up with Rain, a week ago to be precise, they delivered the router to me (with great difficulty) on the 4th business day, advised that it's a simple plug and play and that i should just plug it in and i should connect immediately. I was unable to get any coverage as the dashboard notified me for "No sim card". I have tried calling Rain over 10 times, all of which were dropped calls and being transferred to several different agents.....After so much DIFFICULTY i receive a call from a Team Leader advising me that they provided me with an unregistered sim card of which does NOT WORK and i must wait an additional 3 days to receive a new one. This is the MOST DISGUSTING service i have ever received in my life and will NEVER refer ANYONE to Rain! Such an inconvenience caused and a huge amount of money wasted, I paid the subscription fee, I used copious amounts of airtime making calls to them, emailing them i am so angry and disgusted i Just want to cancel my subscription however fear that they will not refund me. Rain's service is Pathetic and do not have any sort of management system - No one even cares to assist a client, how is this acceptable???????We are PAYING Customers and their service is THIS PATHETIC!!!!!!!!!!!!!!!!!!!!!!!!!!