Problems with telephone service?

I was on the phone two days ago and while I was talking to this persone I kept hearing some one dialing a phone.  The next day my daughter was talking to a friend and the same problem started up (someone dialing while We Were Talking) No one else was home so we know that it was not anyone in the house dialing while we were on the phone. Could there be a line that was crossed with our phone line?  There were X-Finity people working up and down the street (Flower Lane, Dracut, MA) most of the week. If you need to call us the number is if you wish to e-mail me the e-mail address is