the worst service

i work for a car rental company and one of our clients took his car to this place for a service I Requetesd they send me the invoice by 12 at 9.00 am via email as we have a deadline with our accounts department all our companies details were on the email and at 11.00am i got an invoice from this Mable lady with the wrong details(adress etc) no vehicles mileage or the banking details attached, i phoned to speak to her about making the invoice out to us and not what she did she promised to resend but did not after a few more phone calls she was not available aparently out.i sent follow up emails to her with no success.i finally got hold of her and she told me the petson that needed to sign it off was having their lunch i explained this was an inconvinience to me as i had passed my deadline.eventualy i got an invoice with no banking details no reg and mileage of the car i asked to speak to her manager and spoke to some man who was not helpful at all he gave me the mileage on thevphone and their bank details on the phone and still said they wont release the car if the money does not reflect in their account.it was very unfair n no customer care attitude as it wasnt my fault.