Has the money been taken out of your account? If so, i would call them again and demand that they inform you if they have at least received it.

Hi My boyfriend has recently applied for the PSW and the money was taken out of the account on the 20th Sep and we received the ref number on the 22nd Sep, we are getting worried because the uni told us it would only take 4 weeks max & we stupidly believed them and booked a flight back to the US...