Internet Data Charges - Bad Timing

Hi, with the current pandemic, it meant that there are four of us in the home using data. 2 highschool kids and two adults working from home. We all have to stream/zoom/google meet daily. My comcast bill is almost $300 per month (not including mobile phones), why on earth did they decide to cripple me with the 1.2 TB limit?  I feel this is a really bad decision with Comcast.  I've been loyal to you for 19 years! Where is your loyalty to your customers.  We allow you to use our homes as Hotspots so you can boast about your incredible coverage, but that does not earn us any benefits or rewards.  If we all decided to switch off our hotspots it would in turn throttle your internet wifi.  You say 5% of your customers use over 1.2TB... I beg to differ I believe it to be more. With "smart home" devices, the toll on our internet data is growing.  It really is just a bad decision by you.  I am looking into other options at the moment.  I honestly thought  you would support your loyal customers and keep the unlimited data choices that we signed up for in our plans.  I am absolutely gutted.  I received 3 text alerts this week.. "you used 75% of your internet data"; 2 days later, You used 90% of your internet data; 2 days later... You've used 100% of your internet data!!! How??? We're only part way through the billing cycle. This is going to bankrupt me.  HELP!!!!!