How did you send it? Registered - then you must be having a Post Office recpt,
if not Immediately send an email confirming if the visa office has recvd all the documents you mentioned.
I recieved RPRF and medical request together. I send the RPRF bank draft ny courier. After sending the RPRF I made a case specific inquary, they acknowledged it by the reply email. I also recieved the reciept of RPRF with my passport request letter.