Order placed beginning of Dec was supposed to be delivered the 6th of January. The 6th came and gone and no delivery. No new date given either. They don't answer their phones and they don't answer e-mails either. I have been on hold for 2 hours 30 minutes (yes that is correct 2 hours 30 minutes) as i am determined to speak to someone, but it seems that they just don't care and are not bothered to answer their phones. Please do not place a oil order with Certas. The service is unbelievably bad. I had to place another order with another company as my tank is now empty and the oil was delivered the same day. The company is called Rawling Fuels Ltd RG29 1SO. Fantastic service