Hi Kat,
Its not surprising that you are getting hypos if you are on insulin as well as a sulphonylurea (glicazide). Glicazide stimulates the beta cells of your pancreas to produce more insulin. By taking both you are effectively getting a double dose.
As Ginger said, the normal "base" treatment for a type 2, which you seem to be, is metformin. Glicazide is usually only given as a top-up where metformin alone doesn't quite do the job. Because the treatment your GP has put you on will trigger hypos, it can be extremely dangerous. You need to make an urgent appointment with your GP and ask to be referred to a consultant. If your GP is reluctant then <u>demand</u> to be referred. Your GP does not have the right to refuse. You have already been seriously misdiagnosed once (by this GP I wonder?) and it sounds very like your treatment is now also being mis-managed.