I've raised £600 to help fund my mum’s funeral

My mum died suddenly at the age of 58 leaving behind no estate because she had spent a lot of her later life sick and disabled. She sadly passed away, and I had to pick up the pieces. The funeral director told us they would accept half the money before the funeral, the rest two weeks after. They Have spent weeks knowing I was relying on government bereavements funds which would take up to 2 months to process yet left us til 7 days before funeral to tell us they expected payment IN FULL 4 days before. This changed to 3 days before within an hour. I somehow have to pay £2,500 by the 5th of July (funeral is on the 10th). I can’t leave her rotting in a freezer for 2 months before the government fund is processed. I can‘t switch funeral directors or I will end up having to pay two companies. I simply cannot afford to give her a funeral. I will have to reschedual yet again but they will still expect payment up front which I simply cannot do. I will need to borrow. There is no guarentee I will get the government grant. If i do, they won’t pay more than £2000 and only cover basics such as coffin and cemetery or crematorium. This is the cheapest funeral in my area. I will need to pay people back. It’s a stressful time. Please help. after so much suffering, she deserves the best send off.