Remove Improperly Installed Drop

First let me say I have 3 accounts. 1 recently canceled (after 10 days) in FL and 2 in MA. It is the recently canceled FL account I am referencing. It is a newly constructed home and I was told the subcontractor would have to return to install the line under my driveway and through my front yard over to where the side of the house. They instead came back and placed the cable in between the pieces of sod in my yard and ran the line 275 feet around the back of my home to get to the other side. The line is only about 1”-1-1/2” deep and was accidentally cut. Had I been here when they came to install the drop, I would have never allowed for such a long run at such a shallow depth. Upon discovering how they placed this cable and talking to neighbors that this happens repeatedly to, I decided instead of repairing the cut line to disconnect and cancel my account after only 10 days. I was told on the phone by a rep, that Comcast would be here to remove the drop from my yard and that since there was a 30 day money back guarantee, I would be credited the full amount on my bill since again, it had only been 10 days.  Neither the cable drop has been removed or my charges.  The line is a trip hazard and the bill says “past due.” I have called but can’t seem to get anywhere close to a resolution.