My pool was dug and rebar added December of last year. It has sat in this condition as the contractor has been lazily chasing down plumbing leaks before they can gunite. Covid and an increase in pool sales demand has created more delays on my project. Meanwhile, the rebar has been exposed to weather all this time, is getting rusted and when it rains the deep end fills with water and does not drain for days, further causing rust issues. Contractor says its not a problem. Please advise as to my rebar concern.