I had a financial based company take money out my account without my consent or permission and they only offered me 50% refund for this membership fee.
I complained and continued for weeks complaining without any email responses and got advice and support from the Ombudsman and after some communication I had with rogue company the FO contacted them and although the company was unwilling to resolve my issue with me they got the full refund plus some compensation as it took 7 weeks and some stress to get a full refund.
At the same time my bank had on 3 occasions given me incorrect information about my debit card and was complaining to them and given a tenner but then got FO back involved who wrote a letter to bank and they decided to give me further compensation for the confusing information they had provided me.
I was delighted with them as they listened to me for ages and helped me to try to tackle the complaints I had and my aim was never for extra money I started out complaining out of principle and just wanted to give up at times as it was too stressful and time consuming, but the FO seemed to do what I just wasn't able to do myself and much beyond what I had initially seeked and wished for.