Edit in JSFiddle

var myApp = angular.module('myApp', []);

myApp.controller('MyCtrl', function ($scope, $q, $timeout, $rootScope) {
    $scope.accountMoney = 100;
    var bankCashCheck = function (cash) {
        var cashCheckJob = $q.defer();
        var promiseCard = cashCheckJob.promise;
        $timeout(function () {
            alert("Yes! We got it!");
            if ($scope.accountMoney >= cash) {
                cashCheckJob.resolve(cash);                
            } else {
                cashCheckJob.reject('No enough money.');
            }
        }, 5 * 100);
        return promiseCard;
    };
    
    $scope.getMoney = "N/A";
    var companyPromiseCard; 
    $scope.cash = function (cash) {
        companyPromiseCard = bankCashCheck(cash).then(function (getCash) {
            $scope.getMoney = getCash;
            return 60;
        }, function (cancelReason) {
             $scope.getMoney = 0;
             alert(cancelReason);
             return 0;
        });
    };

    $scope.dealMoney = 50;
    $scope.buyMachine = function () {
        if(companyPromiseCard === undefined){
            alert('Not conatct yet!');
            return;
        }
        companyPromiseCard.then(function (money) {
            if(money >= $scope.dealMoney){
                alert('Get ' + money + '. Give machine.');
            }else{
                alert('No money, no machine.');
            }
            
        });
    };
    
    $scope.reset = function () {
        companyPromiseCard = undefined;
        $scope.getMoney = "N/A";
    };
    

});

<div ng-app="myApp">
    <div ng-controller="MyCtrl"> 
        <span>Account money: {{accountMoney}}</span>
        <br/>
        <span>With $q: I got cash {{getMoney}}</span>

        <button ng-click="cash(100)">Cash $100</button>
        <button ng-click="cash(150)">Cash $150</button>
        <br/><br/>
        <span>Machine Deal: {{dealMoney}} </span>
        <button ng-click="buyMachine()">Buy Machine</button>
        <br/><br/>
        <button ng-click="reset()">Reset</button>
    </div>
</div>