Cox may be able to send you a Big Button remote. From their Frequently Asked Question section:
How do I request a large button remote?
We’ve created an alternative big button remote to enable all our customers to have the same great experience with our products. To request a big button remote, call our Specialized Accessibility Support Center at 1-888-266-1304.
EDIT: I'm sorry. I forgot you have trouble speaking. You could send an email to firstname.lastname@example.org and a rep should forward your request to the correct dept. Include your full name and complete address in the email.
Do you have a tablet? If so, try out their web remote. Or if you prefer, there is the Contour Big Button Remote (81-1031) found here. I believe you can pick one up at a Cox store but you may want to call first. Use this link to find the nearest store.
@WiderMouthOpen, To receive a big button remote, you will need to request that one be shipped to you since they are not currently available at at our retail stores. -Allan, Cox Support Forums Moderator.