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I am experiencing the same issue. This occurred for both the Houston vs. Utah game and the Cleveland vs. Indiana game today and has occurred in the past.
After getting asked to try the SAP and language settings and then getting the run around from Cox support, I did finally reach a Cox support employee who put in some effort. My understanding is that she reached out to a higher support tier and that the issue is ABC's broadcast, but Cox is unwilling to reach out to ABC because it is not considered a recurring issue.
After finding this thread, this is clearly a recurring issue and needs to be resolved.
I will be cancelling my streaming service if they cannot resolve this in the next few days.
ABC/ESPN's feed isn't the problem. This issue is only for Contour users in the Oklahoma area. You can see the same feed if you go to the ESPN website and the audio is in English. There is an open ticket for this issue EVS000000063904 but they won't work on it unless someone reports a problem. Every time I've reported it, I've gotten the run around. Seems as if this would be easy to predict... all they have to do look at the NBA's television schedule!!!