Poor customers service and money making schem

Im very disappointed at the service given by the budgetair team. Im due to fly to France on Monday 26 October 2018. I know i can make changes to my bookinh within 24hrs. Ive been calling since yesterday and they dont want to assist me. Today i spoke to Christina who was absolutely unprofessional and rude to me, all she says is mam your ticket is nonrefundable and theirs nothing we can do. I asked to speak to a manager and she told me the manager is not available. I called back again over none times. I spoke to Jack, Sonia, Jessie and a few others. They dont have surnames and it seems that to me that they have **** names in my opinion. Im in a crisis and i need to change my ticket because i will loose my money and miss my flight and budgetair is no longer answering my calls. Sonia said a manager will call me back in 10 minutes and it been more that 2 hours. I have no idea what to do in this situation as it seems like they a running a money making operation with no after service once youve paid your money. I called Virgin Atlantic and they said they can not help because budgetair has a contract with them saying that they must refer clients back to them. They cant assist me because of the contract that ties them. I'm very very upset .