Been here a few times before, n'est pas?
Really - 3 simply don't learn, do they? Its no good trying to spin their way out of this. The Emperor really is not wearing any new clothes. None of us are being fooled by this. 3's HSDPA network is a busted flush and needs some serious and significant engineering attention.
The solution is simple:
1) Sack the PR department
2) Use the money saved to bring in some good engineers
3) Buy in the kit that 3 need and get it deployed
4) Sack the person/team responsible for the network design that has crippled SMTP
5) Use the salary saved to bring in someone who actually knows something about networks.
6) Shut down Mumbai Call Centre
7) Use the money saved to open a UK-based Call Centre
8) Honour your obligations and release Customers from contracts that you are patently unable to fulfil on your behalf - You might win a few back after the present troubles are over.
I'm not entirely sure how much more bad press and Customer illwill 3 can stand before it becomes completely unviable in the UK and Ireland. They really have no notion of what a Customer is and how one should be treated in the face of such corporate incompetence.
Me? I'd start a case to sue for breach of contract. 3 cannot hide behind their "network may be of variable quality and availability" clauses. No court in the land should permit that!