Bodyclock advanced 200 broken

Hi all, I've had a Bodyclock Advanced 200 for for about 4 years now. In the last 6 months or so, it's started going crazy. Here's what it would do.

Pressing and holding the + or - to turn on or dim the light would cause the bulb to flicker, and turn on and off, sometimes going out completely until a few more presses of the button.

I have the sunrise/sunset set at 15 mins. It completely ignored these settings and did 30 minutes for each. The sunrise went from darkness to full brightness instantly at the start of the 30minutes. The sunset dimmed gradually, but the light never went out totally.

In 6 months, the clock has gained nearly 20 minutes. My partner has exactly the same Bodyclock, and his clock keeps good time.

Last night the light went out completely, and no amount of changing the bulb will bring it back. The light seems to have now permanently broken.

Pardon the language, but my query is, what the hell is wrong with my Bodyclock?

Thanks!