Instant Lawns

I contracted with Instant Lawns in May 2018 to remove and replace my front lawn. I made a down payment of $430. It is now October 31st and Instant Lawns still hasn't fulfilled the contract. A lawn cutter did come a month ago but that was it. I have telephoned them and spoken to the receptionist asking that someone call me back to set a firm date for the replacement of the lawn but no one got back to me. I have also re-telephoned and left a message on their answering service to get back to me but still I have yet to hear from them. I am not a happy customer.