Hi Susan, have I got this right you had debts of £82,000, you paid in yourself £30.000, plus an additional £21,200 on top of the £100,000 inheritance, that equates to £151,200 if my maths are correct, that is nearly double what you owed in the first place. Yes you will reach 100p in the pound, there will be additional fees on top because of the amount of monies raised, as for the statutory interest as Melanie has said many times in the past this isn't something that is asked for in this day and age.
I think you need to write a letter to whomever is your IP, send it recorded delivery, outlining your concerns and give them 10 working days to answer, if not answered correctly or at all, then invoke their internal complaints procedure, if that doesn't get the answers you are looking for then I would complain to their regulators, that is a substantial amount of money and possibly a lot of it belongs to yourself, good luck and best wishes, hope you get this sorted soon.
Om shanti, namesté, good luck to all who are embarking on the IVA journey, it isn't always an easy one but the outcome is the best.
IVA COMPLETED August 2012, received Completion certificate 18.4.13.