homedepot.com: didn't fill last number
bestbuy.com: didn't fill last 2 numbers

Proposed solution: After filling, we should check input value is what we expect. If not, we should try filling in different ways to get correct value.

For example, assume the following number:

14154567890

If we input and end up with:

1415456789 we then know we've filled with a country code which failed, so we should strip country code and try again