I have a situation where, in spite of not being the project lead, I've been expected to do most of the project work, but without the necessary support and timely input from colleagues.
Much of the work is of a technical nature, providing specifications and detailed information on our systems, but I've been brushed off, priority around tasks on the project is constantly pushed out for other work and responses have taken ages to come through. Emails often go unanswered for weeks despite repeated follow-ups.
As a result, the project has dragged on well beyond the expected completion date.
I feel that project ownership is being retroactively assigned to me because no one wants to take responsibility for the information provided and that there is someone to blame for the delay. What can I do to address this? Is there a effective way that, without just trying to pass the buck, I can tackle this ambiguity around the roles and responsibility in the project and deal with this lack of urgency?