Booking process service

Our family goes camping every single year at silwerstroom resort, wheather it's tent camping or chalet camping. We were always happy with their services and communication. However this year its been a struggle to evens get your booking to the invoicing stage, I had to complete a booking form twice and yet no response or confirmation of email received.I have called the resort and the lady named Nadia said the email was received and that I should just wait for invoicing. I booked for the easter weekend dates 17th to 20th/21st of April. Im constantly calling and checking in but thats the furthest it goes. All bookings is done via email which is no problem as this is how its been done previous years too but im struggling to get an invoce since February to confirm my booking. I dont know what to do anymore. Any assistance to make this process more quicker and helpful would be great.