You need to first read carefully the recorded "covenants, conditions amd restrictions" upon your property as a result of it being a part of the planned unit development that it is in regarding any mention of repairs to individual units in that its terms would set forth the protocol for such and any faulty repairs made by the association.If there is no mention of this, then you need to send to the association with a letter (keeping a copy for future reference) the various estimates that you obtained for the faulty repairs that its contractor did requesting that the association choose one of these contractors for the needed repairs in that you have no confidence in the original contracor who caused all the problems needing corrections.You need to insist that the first contractor stays away from your property.Good luck.