is that request to find out whether Barclays is due to repay me back part of the Loan?

Hi Everyone, Would appreciate if someone could give me some advice on this one. I had a Barclays Loan for which got into arrears since October. In November, I managed to get a temporary suspension of the repayments by paying only £15/month for 3 months and then review the loan in January. Due to several factors and due to my work ( travel abroad frequently ), this didn't happen so i was sent a Notice of Default Letter letter dated from 4th February requesting repayment in full or contacting by the 4th march to renegotiate the loan. I contacted them only on the 4th march and was informed that there was no negotiation possible and that they would cancel my loan and then also close my current account with barclays. I offered to repay my normal instalments plus £100 every fortnight to clear the £748 in arrears but was completely refused. I'll now lose my current account and will only be able to get a cash card account which is basically useless... On the other hand, I had a previous loan with Barclays for which I received approximately £2000 refund. This was due to an apparent inadvertent incorrect information sent to customers about the loan. They reviewed it and refunded me. With this current loan being cancelled, how can I find out if I'm in the same situation and am due a refund?