Ordered 500 litres of central heating oil on Monday 2 December. Delivery was to be following Monday 9 December-no show. On the Thurdsay 12 December, Certas rang me to say delivery today or tomorrow Friday 13 December-no show. As I was running low on oil, I had increased quantity to 600 litres. Rang Certas on Friday 13 December and informed delivery was now Monday 16 December. Rang Certas this morning and delivery was confirmed for today Monday 16 December. No sign of delivery by 3 pm so rang Certas once more to be told "No delivery as tanker can't be loaded". After many years of using company, I have now cancelled my order and moved to another company.