"waiting for a referral"

Dec 2010 I went for an eye test at my opticians, resulting in them writing to my doctors for a referral for tests for possible glaucoma. Due to quite a few major personal issues I forgot all about it, and never heard anything about an appointment. I went back to the opticians in Dec 2012 for my two year checkup and was asked what the outcome was from the hospital. I explained that I had never heard anything, to which they stated that they would write to my doctors again as I needed further tests still. I asked my Dr in Jan 2013, Mar 2013 and again in Apr 2013 as to what was happening as I heard nothing where I was assured that I had been referred. I received a call from TRAQS in early May 2013, who informed me that they had not received a referral from my Dr's until that month. This was nearly two and a half years later.