Aside my daughters disability she is also Autistic and would tear the car apart to gain a means of escape with that type of noise pitch. Its bad enough if I forget to turn the radio down before she gets in!
My parents Crossland was in for over three months waiting for a central locking module when it eventually came the dealer said the screws were missing so it was another month. They refused to get them from the local nuts and bolts shop!!
Anyhow Mb put them unto a hire car which was sourced by the RAC.
Best of luck and hope you get a favourable out come.