The first thing to consider, is if you, or someone else, is putting too much personal information on social media sites, etc.Many of these occurrences happen after disclosing too much about our personal lives. Good luck!
Don't play into it. Telemarketers can save random numbers and will choose to harass the ones that show them the most attention... that's what they are trying to get. If someone doesn't respond then they will move on to someone who will. If these texts seem to strike a personal nerve keep in mind that they are actually very general, even dropping the phone carriers name. Think about it... all they have is a list of demographics. I doubt this is a company thing, I think they are employees trying to mess around, don't be surprised if you get it from different numbers.Legally they have to take you off their list if you ask, if your that pissed then print out your bill and sue for harassment?
Hang in there!