I heard that some attorney put a deal together with some landowners and led them to believe that XTO was buying the deal for $XXXXX.00 when in fact XTO knew nothing of the deals amount other than it was being put together for their review. So if this is the case with you don't get mad at XTO, get mad at the person putting the deal together.
I have had both the in-house landman with XTO contact me a few times to check the status of the lease but I am mostly speaking to Roc Cosper, a landman out of Oklahoma(?).
You can call the in-house landman, he/she will tell you if you are in an area that XTO may be interested in. The in-house landman may offer you a lease but if you have many changes or additions to their basic lease, the in-house landman will assign you to a field landman.
If you wish to call Roc Cosper, he is the most pleasant, up-front landman I have met. Mr. Cosper's number is 361-935-2806.