According to the VFS website the Silver Premium Package contains:
Priority Visa: Put your application at the front of the queue
Application and Document: Peace of mind that you have all the supporting documents required
Courier: Get your passport delivered directly to your home or office
SMS: Get instant visa application updates sent to your ...
As written in a comment by @Giorgio:
If you're unable to get a response from the VFS centre through which you applied, your other option would be to contact the UKVI help centre: it is fee based in England and it available 24 hours a day Monday through Friday (so not from Saturday12 am through Sunday 12 pm GMT.)
At this point, calling would be faster than ...