Things get worse.
This so called transcript appears to be nothing of the sort but someones interpretation of the comunications. It is riddled with flaws like using altitude instead of flight level and not one single readback. Either the authorities need to ensure information is accurate or Malaysian need a huge education programme in ICAO phraseology
This is only going to lead to more speculation as people will be commenting on something that is not accurate. If they cannot get this right, what else can we believe?