Can I get some help with some S4 Mini text message thread problems?

A

AC Question

S4 Mini Text message thread problems

I woke up this morning to find that I was getting incoming text messages in a separate thread than usual. But this new thread cant be replied to because there is an extra digit I cant get rid of. ex. the real number is (123)-456-7890 but when I receive the text the number is +11234567890. I cant reply because there are more than 10 digits but when I reply to the real number all the of the texts come in under the other one. Please help its driving me crazy.
 

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