Last August our family moved from a location near the CO where we had X1 service for 10 years at about 11Mbps to a more distant location with X1 speed of 3.5Mbps. This was marginally satisfactory until April, when it became clear we needed higher speed, and an extra $20 a month for X2 at 7Mbps was not going to be a good solution, so reluctantly we went with Comcast. We were informed that, despite paying the full rate of $50 per month plus fees, we were now committed to a full year or face an early termination charge, so we are paying out the year for unused DSL.
Wanting to keep our landline, to avoid the hassle of setting up VOiP, 911 service, and a UPS, we decided to continue our landline POTS. But instead of being willing to simply switch the connection from DSLAM to the POTS at the CO, we are being charged the full freight of $150 for a new line to be added, then we will have to call and port out old phone number to the new line before abandoning the old.
So to ask the OP question again, why did the field tech need to come to my house at all, when we already had the necessary wiring in place?