Disheartening customer service by Rain

I am very disappointed in the service, or rather lack there of, that I've received from Rain. I was last in contact with one of their employees, Carl Martin, on the 8th of August regarding a double payment. I paid for the account and they also debited after I made a manual payment. I sent all the relevant proof and was assured that the issue had been raised with Billing, it's been 10 days and I've still not heard back. I've sent 2 follow up emails to Carl, to no avail. I'm extremely disappointed in this service. Never mind the fact that I keep wanting to change my billing date to the 1st and they keep requesting my payment the 25th of every month, but that's a story for another day.