Tight Air pressure in Car

[poppet43266]

Please help me!! I have a 55 reg corsa sri & in the last week i have been experiencing strange air tight pressure in the car. Of course 3 weeks after the warranty has run out!!
It is bad when you get in the car & shut the door you can feel ur ears tense. Its almost like ur taking off in an airoplane. It get worse with the faster you go & at 60mph u feel lik ur head could explode & your ears pop. When u turn the heater on anymore than no.2 then its terrible, but there is no noise or whirring sounds??... I have now taken to driving with my windows open a little & in this weather its not good at all. I have ask many mechanics & they r all baffled & cant work out wat it is. All filters are clean, i have tightened my doors so its not comin through them...??? Iv taken it to a local garage 2day & they think the exhaust is rattling as it enters in to the engine & say its unfixable...???? Im at my last reort & am takin it 2 my local dealer sat at £65 just to look at it. What can i do?..... Its now starting to distress me grately. Id be grateful of any suggestions.

Please email me poppet43266@hotmail.com

Thanks!

[dancotton2003]

erm

are you sure you got in ur corsa and not a submarine