u/LeftIndustry3939

Good morning. I recently made the switch from Verizon to tmobile and at first a lot of the people I was texting I wasn't receiving their messages back. For a majority of them it resolved in the first week. But its been over a month almost 2 now. And there are 2 specific numbers my phone won't receive texts from. I can send them to those numbers but I never receive anything back despite talking to those people thru other apps. How do I fix this?