Rain still billing after cancellation

I cancelled my account on the start of July. I then received an email with confirmation that my cancellation was successful and would take affect on the 1st of August 2020. I still got billed for this account. I have mailed their so called "support" twice, but have nor heard back from them yet. there is no number to call and I need my money, obviously it was meant for something else. This is my first complaint. I'm being nice.