my pilot light went out?

ive got a baxi bermuda 2.1/2 yeares old and for the first time the pilot lights gone out for no reason as i can see but the problem gets worse ive tried several hundred times to get it to light but with no success i press in the grey button and press the ignite button 30 or 40 time but still the pilot light wont light i can here the gas when i press the grey button and i have the large knob in the 0 position as stated on the light pilot light in manual anyone any ideas please