Welcome to our community and thank you for your post. We appreciate you leaving your serial number and will get started on finding your account and sending over the new modem! I'll come back to let you know and confirm we've put in the order.
Thanks for waiting. I was able to place the order for your HT1100 tech refresh! It should arrive within 3-5 business days and there is no need to return your old one. I also see that you are on an older version of our service plan, Power Max. We actually now offer the Ultra plan in your area which will increase your Anytime Bytes to 50GB and Bonus Bytes to 50GB all for about $40 less than what you are paying now! Let me know if it is okay and I will switch you over to that plan right away.