Well your thought is not correct Peter Brendt.
The day of the killers third call , July 23, 2009, police requested a tap on the phone.
So at the next call, date not known, the date of next 3 calls have not been published, police tapped the calls, which means the last 4 calls were tapped, including the last call beeing Aug 26, 2009.
http://missingpersonsnetwork.org/20...bert-victim-of-the-long-island-serial-killer/
"Approximately a week after Melissas disappearance, Amanda, Melissas 15-year-old sister received a call from Melissas cell phone. Relieved and excited, expecting to hear her sisters voice, Amanda found herself speaking to a man who authorities believe was Melissas killer. During the call, the man said sexually explicit things to the child and began describing horrific things he was going to do to her.
It wasnt until the third phone call police finally requested a tap on the phone. On August 26, 2009 the male caller made his last call to Amanda and reportedly admitted to killing Melissa. He also warned Amanda he knew where she lived and would come and kill her too."
The info is actually also in a post I posted on page 6, on the previous page on this thread post #132:
http://websleuths.com/forums/showthread.php?t=134782&page=6
FYI, the phone calls to MB's sister started July 16, 2009 and ended Aug 26, 2009 with the caller saying he killed Melissa.
The calls ended after a Buffalo TV station revealed their existence.
So the timespan of the calls where 5 weeks and 3 days.
2009 calls from MB cell phone, (7 all together. The dates of phonecalls number 4,5, and 6 has not been made public ):
1. July 16,
2. July 19
3. July 23
4. ?
5. ?
6. ?
7. Aug 26