How to call an API constantly with a function?

Question

I have a customer management system. I am using an API to get all of the customers. It works perfectly. I am using an ID, if there is no customer who has this ID, then it creates a new customer. Here is my code for that:

def handle_get_customers(company):
    customer_service = requests.get(settings.API_ADDRESS + "customer/get/all",
                                    headers={'Authorization': "Bearer " + token_key}).json()
    service_customers = []
    for customer in customer_service["data"]:
        service_customers.append(customer)

    for person in service_customers:
        new_customer, obj = Customer.objects.get_or_create(api_id=person["id"])
        new_customer.customer_name = person["name"]
        country, d = Country.objects.get_or_create(country_name=person["countryName"])
        new_customer.country = country
        new_customer.address = person["fullAddress"]
        new_customer.phone_number = person["phoneNumber"]
        new_customer.email_address = person["email"]
        new_customer.currency_choice = person["currency"]
        new_customer.api_id = person["id"]
        new_customer.company = company
        new_customer.save()
    return service_customers

And I am listing all customers on a page. It has a basic listing function like;

def customer_list(request):
    current_user = request.user
    handle_get_customers(current_user.company)
    customer_list = Customer.objects.filter(company=current_user.company)
    context = {
        'customer_list': customer_list,
    }
    return render(request, 'customer_list.html', context)

I want to get all new companies without refreshing the page. I don't know if I can use Ajax for that but I guess the handle_get_customers function should work constantly but I cannot figure out how can I do it?