I have!
I believe it's an issue with their site. Was over the summer this happened. Comc has a live chat mon-fri 4pm CET-12amCET. That's the best way to get a hold of customer service
During those hours click the red support button in the bottom corner and live chat should appear. I'd also send them a reminder email and that usually will get them to respond.
Many ppl complain about comc customer service being tough to get a hold of and the website being glitchy
