Pay renovation/extension costs

We were pre approved for our Extension costs. We used our own funds for kitchen and flooring $30,000 and when it came time to draw down on our loan funds out pre approval had run out. We reapplied and were told we don’t qualify for the loan anymore due to changes in lending because of covid. Even though our employment hasn’t changed and we are essential workers and are not effected financially. We are now almost finished the works on our home and the builder has had to stop half way as we can not pay him. We need these funds urgently, today!! and can’t seem to find anyone that can help us