Phone Fast is terribly slow

I'm not usually one to do this but I am highly frustrated. I submitted a claim for a damaged iPhone 11 to my insurers who were great, and approved my claim by authorising a replacement of it. They advised that Phonefast would contact me regarding paying my excess, and the delivery of my phone (which should take one day after payment). I paid the excess amount of Wednesday, was advised of receipt of payment on Thursday and that my phone would be sent out that morning. It has been a week, of calling everyday with a different excuse, insurance has not authorised, they can't reach my insurance etc. I was promised delivery today after all miscommunications had been cleared up and yet again, no phone has been delivered. I have not been able to do work for 3 weeks!! If you're being told to use Phone Fast for your new phone or replacement by your insurance- don't do it.