This is an unfortunate situation, as the fuel removal company may not have been aware of the required process with your specific vehicle. It may have been the case that removal on site was not possible and the vehicle would have required towing to a garage in order for the saddle tank to be removed.

If you feel you have a strong case we would suggest writing a letter of complaint to the company, including the information you have received from your garage. If they refuse compensation you may need to take your case to the small claims court, although you may wish to consider getting independent legal advice before doing so.