public function recalculate() {

        $base_fee_prev = ClientServiceSettings::CalculateBaseFee(explode(',',$this->Service_Level_ID));

        $add_fee_prev = ClientServiceSettings::CalculatePrevAddFee($this->Additional_Users,$this->Additional_Projects,$this->Additional_Storage);
        $monthly_price_prev = $base_fee_prev + $add_fee_prev;

        $this->Fee = $monthly_price_prev;
        $this->save();

    }