Fwiw, when I've forgotten to cancel something, I've had success saying something like "I was checking my credit card statement and was surprised I'm still payin

Fwiw, when I've forgotten to cancel something, I've had success saying something like "I was checking my credit card statement and was surprised I'm still paying for X. I haven't used it at all since Y date. Would it be possible to have a refund, perhaps partial, since then, for $xx?". Basically I make it easy for them to say yes.