Code not running as it should

Hi guys please i need help i have a piece of code running. It's button that suppose to run if conditions the first two conditions run perfect however the next two condition don't run any help

If firstNumber = secondNumber, then the other "if" statements are not checked...
Do you want to check if firstNumber=secondNumber and also, regardless of that check, check if secondNumber=thirdNumber? then don't use nested if-then-else if statemens...but independen if-then-else.

Phone numbers are not necessarily numbers if they contain separators like ( - )

Are you sure the texting component will accept more than one phone number JOINed together?

That's expecting a lot of it.

Check the tool tip.