I know what you mean. I have been trying to sort out an issue for the last15 days, spoken to several customer advisors, written several emails to the back room staff and finally resorted to the old fashioned method of the good old Royal Mail. I would not be surprised if they turned around and said they never received my letter.
If you decide to go ahead make sure you can set a spending cap, just been stung for a 3 figure sum £xxx.00. Normal contract cost £15.00 We will be moving all our 3 mobile contracts to another supplier if we don't get this sorted soon.