Local NBC & CBS & Fox Channels Gone & Replaced by Local Affiliates from Different City

Local CBS affiliate WTHI and local NBC affiliate WTWO, along with ABC affiliate WAWV and Fox on a subchannel, all based in Terre Haute, Indiana, were removed in the past few days and replaced with ABC/CBS/NBC/Fox affiliates based in Indianapolis.

The first Comcast tech I spoke with on the phone seemed to verify that I should have the missing channels in my lineup and attempted to fix it.  She failed and escalated it.  The second person who I spoke with told me the channels are, in fact, gone and the only way we can watch those local channels which have been carried by Comcast and its predecessors for decades is OTA or switch our TV service to a satellite service which might carry them.

I find this news incredible.  I called WTHI and their general manager reported they they could not have any knowledge which cable or satellite services carry their channel.

I checked the last four months bills at the end which is where programming and other changes are communicated to customers, I understand and I cannot find anywhere, in writing, that these changes are real and permanent and that this isn't a technical problem.

Can someone confirm that these channels being replaced by the Indianapolis channels is a deliberate act by Comcast?  The escalated tech support guy could only tell me the channels do not exist.  He could not tell me why or find anything anywhere documenting the change.  Are changes to customers' channel lineup supposed to appear in writing somewhere so when the changes actually happen we can know that it's not due to a technical problem?  Thanks.