Good but something very odd

When I used this and I get this app, when someone else other texted me on my text free but they texts to my personal phone number and it supposed to go text free not to my personal and they keep calling me from my personal and someone I not even know and supposed to keep my text free separated from my personal text....... I dont trust this anymore......

Jkbrub18 about textPlus: Text Message + Call, v5.6.11