Tried to migrate to O2 in May, after 2 weeks of hearing nothing gave them a ring.
They said I had not gave them a MAC Code which was untrue and after a few minutes he found it in the application
2 weeks more of hearing nothing gave them another ring only to be told that the MAC Code was no good and to get another one.
My current ISP said the MAC code was OK
Rang O2 again and they did agree the code was OK but did not know what was wrong.
So I gave them another week to sort it out and after hearing nothing again in this time rang them again and cancelled the order
TOTALLY USELESS, WASTE OF TIME, AVOID