refund

I am noticing an ongoing trend with Xfinity in regard to any refunds. I was promised a refund of 100$ by an in person store associate and then again online through a chat agent. It's been over a month and I have yet to see any money returned to me. Getting ahold of someone is impossible as most of their system is AI. My call will be taken over via text and then I get met with a message saying my request could not be assisted at the moment. Then it sends me a link of where to chat and then I cannot use that link because I don't have an active service. I am growing annoyed and frustrated with this process.