Is it now you are supposed to call me?

Obviously, there are different angle to what might lead to your decision on how to respond to this question; Is it now you are supposed to call me?

In a situation where you have sincerely tried several times, maybe, network glitch, phone not been on due to power outage,etc, yet, your partner refused to see reason even with your explanations.

Sometimes, it causes a lot of unresolved issues that could lead to break-up.

In summary, always try to listen to your partner's explanations before making conclusion.