Hello and welcome from me. I agree this part can be a bit harrowing, but it doesn't last long. Like many others, I stopped paying as soon as I decided to enter an IVA and built up a small emergency fund.
I would recommend you open another account asap. I went with a co-op cashminder, which you open over the phone. Very friendly and painless procedure ( in fact I now have two cashminders --- one for everyday use and t'other for those things we need to save for ( car tax, repairs, that sort of thing).
Phone calls, I am afraid will come. I answered mine, glowing in the new found power of invulnerability ( somewhat naive I admit). I just let them get their scripted speeches out of the way and told them I was entering an IVA and to talk to my IP ..... some didn't even know what an IVA was -- they are only, on the whole, call centre staff and their next phone call is probably to sell appliance protection insurance !!!!
Many people just ignore them and ask those they want to hear from to call on the mobile ( tell them the landline is out of order, or you are fed up of telling people you don't want double glazing!).
If you have any online accounts with any of your creditors log on and either delete or alter your number in the profile.
Best of luck --- it won't be long. Keep posting

My opinions are merely that .. opinions based on experience. Always seek professional advice.
IVA Completed 23rd July 2013 .... C.C. 10th January 2014