faulty mileage and heater only blows on full power

[biggyjay123]

hi just seeing if anyone can help me i have a 2001y reg 206cc 2.0 16v and have a few minor problems i would like to sort on it the digital mileage only shows a couple of lines at first then as you use the car you get a few more but not near enough to see the mileag also my heater is stuck on full power all the directions temp etc work on the climate control just not the fan speed any idea ??? and my info display only the rear bulb lights up no leds !! again any1 got any idea be so gratefull to just sort 1 ????