Sudden Spike in Data Usage

Hello, 

I usually use around 500GB per month, but my data usage has suddenly spiked up since December, 2024. It seems almost doubled than I expected. 

For the December, 2024, I waived the data overage fee because of it's the first month of over 1.2TB limitation. In January 17th, 2025, I received a warning message that I've used 75% of the limitation. So, I added unlimited option ($30) to avoid the overage fee, just in case if it is over 1.2TB. Then, I found that there are many users that have the same issues on this forum:

https://forums.xfinity.com/conversations/customer-service/data-usage-problem/65248627697e8c6b344613b3?commentId=65260076f8fcd3407e3c6299&replyId=6526014796e42961f081ff26

Also I found that, there is a known issue like the attached screenshot below:

What should I do?