Ex boyfriend called me and then hangs up before I answer it I texted him you called? and he said mistake. Was it a mistake?

I just want to know your thoughts on this because we did talk to each other yesterday to talk about stuff within our relationship and work it out but he kept talking over me and arguing but today he just called me and hung up saying it was a mistake.. maybe I’m thinking too much into it

Ex boyfriend called me and then hangs up before I answer it I texted him you called? and he said mistake. Was it a mistake?
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