Non-existent customer service

I am struggling since March to cancel 1 single device on my account with Rain. Either I get a nonchalant response to my email weeks later with no tangible assistance, or the website just doesn't give me any acknowledgement of my cancellation requests.

If anyone at this company still cares about service, please get back to me! Refund my charges for April, May and June, let me know if I can drop off the router at a branch and cancel this damn sim card already! Please!!! It cannot possibly be that hard to do!!!!