Vehicle Claim Still not paid

My car was ****** on 3 Feb 2015 and was subsequently recovered. After assessment it was noted that the car was a right off. I accepted the offer that the company put through to me for settlement as i was to buy back the car and repair it.I signed the offer of acceptance on 5 March and the next day was notified that the payment had been requested. I have followed up numerous times regarding the payment and was initially told it would take 10 working days. It is now 20 days later and i still havent received any payment, George does not reply to any of my emails or phone calls. no one at the companys contact centre can provide me with any details and i am stuck in a position where my car is now ready for collection and i have received no payment from the insurer!! very bad service! very unprofessional!