I was with Virgin on a sim only monthly renewal for around £12 and got a call from Virgin saying they could increase the mins and texts AND reduce the bill to a tenner. I said I would think about it and said
''email me the details''
He said it was just a telephone offer and I said oh well I'll think about it then.
Final offer............£5.50 per month 300 mins of calls and 600 texts. (far more than I ever use)The only catch is that it is a ''contract'' for a year rather than renewed monthly.
Result !
