/// <summary>
/// Gets the a sum of call minuts for the past month.
/// </summary>
/// <param name="client"> The client who requested </param>
/// <param name="lineNumber"> The line number </param>
/// <returns> Minuts </returns>
public double GetTotalMinutes(Client client, string lineNumber)
{
var line = _lineRepository.GetClientLines(client.Id).FirstOrDefault(x => x.Number == lineNumber);
return(_lineRepository.GetActualMonthMinuteCalls(line.Id, DateTime.Now));
}