The project manager should look at the track record of the primary vendor and if it is not satisfactory he/she should be on a lookout for another vendor who has a better track record with other companies getting similar kind of material you are getting. This vendor should be identified and should be taken on board as soon as possible. One needs to be professional at whatever he/she is doing so as to go a long way.
For the current question, I would say we need to check the package on arrival and if there is defect it should be conveyed to the vendor ASAP so that he could send a replacement also vendor should know that the timeline is affected because of this. Steps need to be taken if the material delivered every time is defective/damage.