I think it is unusual for there to be no response when somebody is trying to give the IET money. They have always been prompt with contacting me when I owe them money.
However if you want somebody to phone them in order to chase your emails then I am willing to volunteer, but unfortunately (at least for you - fortunately for me) I am about to go on holiday, so perhaps if nothing has happened by the end of the month you can post a message for me to follow up.
I think it is unusual for there to be no response when somebody is trying to give the IET money. They have always been prompt with contacting me when I owe them money.
However if you want somebody to phone them in order to chase your emails then I am willing to volunteer, but unfortunately (at least for you - fortunately for me) I am about to go on holiday, so perhaps if nothing has happened by the end of the month you can post a message for me to follow up.