Irritating text messages I get on my cell phone

No wait don’t go bear with me. The irritating messages have headers such as

3399949424
@EricTrump: Really p

3399940424
@realDonaldTrump

and

3399940424
@realDonaldTrump

So how do Eric and Donald Trump (who appear to be so poor that they are sharing a cell phone) know that an Italian resident TIM customer is a US citizen who could vote for @realDonalTrump (in a run off against Abu Bakr Al Baghdadi or when hell freezes over whichever comes first)?

I don’t recall telling either mr Trump my phone number. I did have to show ID to get it (Italy doesn’t want untraceable burner phones). All my IDs indicate my place of birth. TIM isn’t supposed to share this information (for example by selling it to Trump2016).