I was promised a refund after I charged for a cancelled subscription. Now they are saying they won’t be able to refund me

Was anyone else told they’d get a refund from rain but ended up not getting it?

I got a call on the 31st of March from Rain, payment was also made on that day. During that call I asked to cancel my subscription. I got a suggestion to try optimization or something of that sort but that if I don’t want to go ahead with it cancellation will still be put through unless I say otherwise. Fast forward to a few days later, I wasn’t able to reach them for the optimization, when I eventually did I asked that it be canceled altogether as I had initially asked. They didn’t cancel it. I asked 3 more times as I had previously mentioned on my last review. I was told cancellation would be put through and that the wifi device would be collected soon after. It was NOT picked up until earlier this week (that’s almost 2months later) when I complained about a charge I got after having asked for cancellation several times. Someone from the RAIN team responded here privately saying the device would be collected and I would get my refund upon collection. GUESS WHAT?!! After collection I received an email saying I will not be refunded. Their reasoning doesn’t make any sense and seemingly they won’t go back to the recorded calls for proof of my cancellation request from end of March as well as Mid April and end of April. Anybody know where I can complain about this further because clearly this is what they do to their customers, I’m seeing a lot of people with similar issues here.