+1(514) 937-9445 or Toll-free (Canada & US) +1 (888) 947-9445
It is currently taking Mississauga 42 days to process the sponsor's portion of the application. Once they are done they will send you a letter stating you have been approved as a sponsor (or not).
Here's the link with the current processing times:
http://www.cic.gc.ca/english/information/times/canada/process-in.asp#sponsorship
 
thanks canadianwoman..

but dont we receive any acknowledgment that the application is received by them and they are processing it?