break statements are missing in switch function =>

;-)

    switch (typeContract) {
        case "Small":
            if (durationOfContract === "one") {
                price = 9.98;
            } else if (durationOfContract === "two") {
                price = 8.58;
            }
            break;
        case "Middle":
            if (durationOfContract === "one") {
                price = 18.99;
            } else if (durationOfContract === "two") {
                price = 17.09;
            }
            break;
        case "Large":
            if (durationOfContract === "one") {
                price = 25.98;
            } else if (durationOfContract === "two") {
                price = 23.59;
            }
            break;
        case "ExtraLarge":
            if (durationOfContract === "one") {
                price = 35.99;
            } else if (durationOfContract === "two") {
                price = 31.79;
            }
            if (mobileNet === "yes") {
            } if (price <= 10) {
                price += 5.50;
            } else if (price <= 30) {
                price += 4.35;
            } else if (price > 30) {
                price += 3.85;
            }
            break;
        default: break;
    }