Hi
as you are in the IVA start up process Send them onto your IVA Company they will deal with them If they call you take the call and tell them to stop calling you and take your number off there database and that if they call yuo again you will report them for data protection

They are not allowed to have your phone number if you dont want them to have it All they need is a home contact address thats it Dont call them back or any tect as you get connected to premium rate lines
Basically you now have to get tough and just wait for your meeting As you are pretty much being processed its odds on you will be accepted ok Try not to worry everybody says that but not easy to do

As long as you feel confident you can make the monthly paymetns then you will be fine
any emails FW them on its all evidence for your IVA Companny and if they get threatening then they can act on your behlaf
A few weeks you will be sorted As the others have said by the time they can do anything legal against you it will be too late you will ne protected in your IVA>
Letters and calls etc are just automated junk and standard procedure for them and also they have admin people calling to put pressure on you to pay some money thats how they get there bonuses
Any issues call your IVA Company and talk with them directly ignore the rest You are paying the IVA company not only for setting this up but for the next 5 years of help and advice and service They are the professionals let them take the flak for you
You will be fine ok @_