Just an update on this. I received my call back from Jennifer who wanted to personally sort this issue hence why I didn't ring them and having to speak to someone new
After sending the amended engineers report with costs direct to her, I was put on hold thinking I'm going to have to battle it out, I was pleasantly surprised when she said I got a deduction refund based on the 13 months of ownership.
How does the depreciation calculation work ? I paid £220 but I'll be refunded for £175 once they've collected it on Sunday.
Thanks again for all your help and I hope this will help anyone else in a similar situation.
I forgot to say after she initially refunded the dryer I asked about them covering the cost of the engineer report. I had to prompt them otherwise they would have let me go. We met half way so got £15 back