I've had a reply to an email I sent this morning to HTC and now they seem to be trying to say its a problem for O2 to deal with.
I'm planning to pop into O2 on my way home to see what they say but here is a copy of the email I recieved.
-------------------------------------------
Dear Xxxx Xxxxxxx,
Thank you for contacting us.
In regards to your HTC Desire S not being able to take or receive calls and text messages, I can help you with that.
I can see that your handset is O2, this means that the software update is not the standard HTC update but rather the O2 branded update, please speak to them with any problems regarding their update, as they will need to look into providing a fix for you.
In the mean time I can log it as a Bug report so we can look at this in the hope of providing a fix, however if it not affecting un-branded handsets then we are not able to provide a fix, as it is not our software that is causing the issue.
If you are on any of these forums, the best thing you can do is encourage others to actual report these problems to us HTC direct so we can investigate, too many people go straight to internet forums without telling us, meaning we are not aware of the true scale of issues like this.
Please provide the following information so I can log this as a Bug Report and we can look into it, in the mean time please check with O2 in case they are aware of it being a result of their software and so they can look into it if it is.
Customer Name
Customer Phone Number (e.g. +44797xxxxxxx)
Customer Email Address
Country
Device Information
Device Model
Serial Number
IMEI
ROM Version/Buildnumber
I trust that this resolves your query, please do not hesitate to contact us again if required.
If this response has resolved your query, and you have no further questions please close this ticket by following the link below. Upon closure of the ticket you will be invited to complete our Customer Satisfaction Survey which should take no more than 1 minute to complete
To send a reply to this message or let me know I have successfully answered your question log in to our
ContactUs site using your email address and your ticket number 11GBCW35ENA000892.
Sincerely,
Paul
HTC
-------------------------------------------