The same thing happend to me in class the same number called me I tried to call back but it was bussy?

This # keeps calling the call center where I work. Either a dial tone or just silence. I tried to call # back several times, but it was busy every time.

I believe it is Direct TV

Phone rang but there was not message left, I did a Google and came up with this site, wondering who called.

It is Ford's Roadside assistnace number.  They called me to make sure everything was taken care of.