Start Problems Omega B 2.2 DTI Urgent help Necessary

Hello I’m new here and would need some urgent help. I have an Omega built in 2001 2.2 DTI 145000 km mileage, just 10 months ago that I bought it, ( I really regret it) The car should be cared for (according to the book yes) I of course off on vacation, arrived in the holiday country 3 weeks without problems driven, and 3 days before the home trip engine does not jump on ………. After very long organs yet to start company, I immediately to the FOH the said m the next day I want to make the trip to Germany booms the car does not start at all. Then after a long organ nevertheless still together, then I thought now it would be better to go home to the FOH driving which certainly have more idea. On the way the crankshaft belt wheel breaks me, it had to have it repaired of course cost factor 700 Euro incl. installation. Here just to house anko mmen wheel bearing broken after long research except FOH who wanted to immediately for it 370,00 Euro have found a workshop for 100 Euro incl. material. have replaced. Then to the FOH drove the car to leave immediately 3 days since it sprang very badly, at the beginning the error search started, first the leak oil lines were all changed and then still the fuelilter vented.Motor jumped again at 150,00 Euro again, after about 12 days I have the same problem m again the car starts badly. after about 4-5 hours later. What CAN IT BE NOW ???????