Unpaid and deliberately ignoring my claim

I have both warranty and comprehensive insuarence with Auto&general. I logged a claim on the 4th of November and up until now my car is still at the services Centre. I made several calls and they promised to get back to me, but they never did. Recently they made me to hold 30 min and as soon as I give them my ID no, they will ask me to hold an never get back to me. How can a big company like this lie on advertising the 48hrs claim n make me wait for almost a month.as soon as I give my ID no, they start making lots of excuses and transfer me to different people and never help. The above concern is on warranty claim. I'd no *** and cellphone ***