I accidentally responded "Stop" to a text on my AT&T phone that came from my business number...now no one receive texts from my business #

I had inadvertently responded Stop to the wrong text on my cell phone...I actually did it to one from [EDITED] which is MY business number through VOIP.ms - Now, ever since doing that, I don't receive texts from that number, nor does anyone else with an AT&T phone...What can I do to correct this?  I have worked with the people at VOIP.ms but it appears to be at the AT&T side of things..

[EDITED per Community Guidelines - removed personal information]