It's your customer (repo owners) asking for support and throwing it away being busy is just lazy attitude. You had prior incidents and the bugs were left as is and apparently it will happen again.
Being busy is lazy? GH has hundreds of thousands of customers. In your company, how often do you immediately drop everything to work on a single customer's issue? How often do customer issues sit in a support queue? What would be the reasonable turn around time for an issue like this?