Certain texts are not received.

I just moved over to T-Mobile a few months ago, but I started noticing that texts from our work automation system no longer comes through.

We called support, they looked at this for weeks and finally told me they won't fix the issue.  So, what options do I have left but to go to another provider.  I have never had issues like this in the past, but it would seem there is so much spam anymore, they are doing what they can to almost shut the service down.

I have three phones and the 5G home internet plan, but my company is advising me to get this sorted out by all means, even if it means moving to another provider.