Rapid changes in my Dynamic IP Address

Hasn't for me. My ip address came up different on three Ip checkers within 60 seconds. Then 3 minutes later it changed on all of those sites. None of them are duplicates from the other ones  I have been on the phone with Hulu 23 x in the last 3 days   Now, today, 8 x due to the rapid changes in addresses.  Now a new error message comes up at the end of every show saying that Hulu only works on a home network, not a mobile one. I DO have a home network set up! We have broken down every bit of it & reset EVERYTHING. Even disconnected my VPN. At the end of the next show, the message comes back. Then internet signal goes out, as it has multiple x in the last 3 weeks18 x in the last 2 days. So I reboot the modem over & over. I keep getting zero mg upload problems even when my download is 86 mb. So it came back up, & here I am, back to the Not at home error screen again. Hulu says they have been avalanched with calls to reset the error. Problems with T-MOBILE have now consumed 5 hours of my day.  They are losing me as a customer. The speeds dump during high usage hours to as low as 3 mbps, or none at all. Can't even use our other devices at the same time! This service has become horrendously undependable. No one at TM knows how to fix it, or blames Hulu, or they just don't give a care about your service problems.  This is an unsustainable way to run a business.