For all the people that suffers harassing calls, annoying calls, etc. For people that what to ignore certain people calling, for a peace of mind, here is the medicine to cure all those annoying calls, one ring tone to silent all, a free Mute Silent ringtone for the iPhone, take it as a gift.

Instructions to install the silent ringtone on iTunes

Download the file
-Open iTunes
-Drag the file to your ring tone icon(A yellow bell) in your library
-Go to file-Sync "Your name iPhone".
-Done.

Instructions to install the mute ringtone on your iPhone

Create a contact for each annoying person or company you want to avoid or ignore
select the Silent Mute ring tone for that contact (Your mute ringtone should be under custom ring tones) Enjoy the Silence.

Well actually your iPhone will still vibrate, if you don't want it to vibrate,
on your iPhone go to 
-Settings
-Sounds and just tap on the ON|OFF switch at your desire.

If you turn the Vibrate off, all your incoming calls will not Vibrate, you will only hear your default ringtone for those, but for those "contacts" that you set the custom silent ring tone to, when they call your iPhone, it will not vibrate neither make any sound, giving you the long waiting peace of mind you deserved.

Download the Mute Silent Ring tone for the iPhone