O2

I have finally been able to cancel a line with O2 after months of trying - hours on hold and cut off calls, sending a certified letter that I was today told they dont accept despite having an address to write to on their site - I live part time int e...

Is there any way to communicate with 02 that does not mean sitting on hold for an hour? I am in the US and have been trying to cancel an old line for weeks but it is impossible to get to speak to anyone. I cannot sit on hold for an hour at internatio...