Retirement tax questions

I received a 4464c letter may the 3rd for a 60 day review so I thought july the 3rd my 60 days were up. Unfortunately after carefully reading the letter it states 60 days from the date on the letter which the letter is dated June 6th....so basically my 60 days review wont be up until Aug. 6th this is sad. There is nothing different on my taxes from previous years after researching it says it is best NOT to call the irs unless instructed to by wheres my refund because if you do then they set you back further and add more time for "reveiws". This is unbelievable. Here it is July 15th I filed months ago and still nothing. I verified I sent pictures of drivers license etc. And yet I'm still waiting. What can I do?