i thin that if they set a price surely they cant go asking for more because they ovr ran and needed you to add the VAT its their error and they seemed to have just wasted time on other cars and put yours at the back, you should of paid the set amount and no more and for the exhaust if that was included tell them were to shove it and they have to finish it if you had any form of agreement signed by both parties then they cant charge more then the set amount and MUST carry out ALL work that was in that agreement i.e the exhaust ect TD are great at supplying parts but their customer service seems to be awful and i no i wont deal with them ever