WE HAVE HAD MULTIPLE AUTOMATED CALLS, 20-30, PER DAY AT OUR COMPANY STATING THAT WE HAVE BEEN OVERCHARGED AND WE ARE DUE A REFUND. WHEN YOU PRESS "1" FOR YOUR REFUND, THE REP STATES THAT HE IS WITH DUKE ENERGY AND ASKS FOR YOUR INFORMATION ON YOUR BILL. THEY TRY TO SWITCH YOU OVER. I HAVE CONTACTED CONSTELLATION 3 TIMES TO HAVE US PUT ON THEIR DO NOT CALL LIST AND THEY CAN'T SEEM TO GET IT DONE. WHEN ASKED TO SPEAK TO A MANGER, THE CALL REP WILL PRETEND TO BE ONE AND WILL NOT PROVIDE THEIR NAME. THE REPS WILL HANG UP WHEN YOU ASK THEM TO REMOVE THE NUMBER. GUESS OTHER MEASURES HAVE TO BE TAKEN. THEIR NUMBER LISTED IS (888)897-**** AND EMAIL IS SUPPORT@***.COM.