Useless support: impossible to understand
Tried to sign on to a Pay as You Go contract with O2. Signed up online and got a SIM. Then called them to give the the PAC to transfer number from old account. Had difficulty in understanding the Call Centre operator. Ended up with a monthly contract which I didn't want. And the number wasn't transferred.
More attempts to contact O2: they have computerised triage system which is, well, just plain unhelpful. Then when I eventually got through I found I had two SIMs and the number had been transferred to the one I wasn't using. Could perhaps have been sorted, but since I could only understand one word in three of the person at the other end of the phone, it was clearly going to be difficult. Since I didn't want to have the same problem every time I wanted to contact support, I exercised my right under the 14-day cooling off period, and cancelled.