customer care mail

I was with Sprint for 18 years I've worked in the same Factory for 7 years I don't know what T-Mobile did but 3 weeks ago no T-Mobile customer in that factory has internet no texting no making calls no accepting calls everything's been fine until 3 weeks ago and the thing is last year they told me they were upgrading Towers to be able to get into buildings better so I guess that was a lie.