Is there a current scam on sending new receiver to existing customer?

DTV doesn't call to replace equipment, the upfront lease cost for an HR54 is $299.00.  DTV has your RID number so there is no need to ask for it.  Most likely  they bought you info from the dark web.

They are scamming your info, now they know you are real and fell for it they will sell your info to other scammers and continue to try to do it again for money.  Most likely they spoofed your phone number to DTV when they called to order the replacement/new HR54 and to help prove they where you gave DTV the RID number you gave them.

This is especially odd since the same guy keeps calling you. First, directv doesn’t call you, you call them. Second, it is extremely unlikely for one agent to be handling the entire activation procedure. Two red flags right there, I think that when you may try to activate this new receiver, the scammer will try to make something up about how it costs money to activate the box maybe.

Anyway, the fact that you got this ‘replacement’ box in the first place doesn’t make any sense. The scammer would have to had called in or at least started a chat session as you cannot order replacement equipment through the online site. 

To call directv and verify anything at this point, call the satellite number in my greeting below and say ‘cancel’ to the robot. That will route you to the loyalty/retention department where a more educated agent can assist. Tell them everything you told us. 

In the meantime, obviously be sure to change your online account password and set up or change the four digit PIN required to authenticate your account both over the phone as well as over the online chat. 

Changing your phone number doesn’t do much as the scammer likely has your account number and this is a more than sufficient substitute as far as account authentication goes.