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I said both times I there was it wasn't a guarantee I could make it, and I asked if you could play today on Monday, so you had three days to say you had something planned, but you didn't.
The two times YOU said the scheduled time, the two times it was "MAYBE I'll be not there". I'm not here to wait at the planned hours doing nothing, waiting for you to come or not. Don't try to put the blame when it is your fault at first, please.