No Signal!!!!! :-(

<p>We've been at the premises for the last 18 months and use the Neotel lines for business, there is poor signal in the area but could make and receive calls with no problem now the Neotel phone displays 'searching' all the time. This problem did not happen before but the Neotel call center agent says that the address is not in the system and she cannot help. So can someone please explain why the address was not updated when we called in before we moved to the premises and why all of a sudden the phone keeps searching. The worst is we cannot change the number because all the clients have this contact number.</p>