You will likely have received numerous letters regarding Ryanair during the pandemic, but I would like to hear your thoughts about our experience.Our extended family decided to go on vacation to Marseille in July 2020. We booked more than half of our flights with Ryanair and the remainder with easyJet. We were unable travel last July due to Covid. We were given vouchers by EasyJet for Ryanair flights. Ryanair flights couldn't be cancelled so we had to change to this July and pay an additional 1,000.As July approached, it became obvious that we could not travel because most of our party weren't fully immunized. EasyJet canceled its flights and gave out new vouchers. Ryanair flights weren't cancelled so we tried again to rebook.I searched for flights that were within our budget, so I could save money on the change fees. I found four flights to Lisbon, but Ryanair asked me for a 470 payment when I called them to make changes.I was fed up and decided to refuse. If I had gone ahead, I would have spent 1,800 on four return flights from Lisbon that I saw on Ryanair's website for 800.According to the company, rebooked flight prices are different from new bookings. This is not legal and it is certainly not ethical. We have lost 2,500 as a family to Ryanair. We only wanted 800 flights but the company won't allow us to. We are very unhappy with the treatment we received.ST, via emailIt is understandable why you are so angry. Ryanair explained to me that because you had booked your original flights before the zero change policy was introduced, Ryanair would charge a flight change fee as well as the difference in fare. It should be noted that Which?, a consumer group, only last week reported that Ryanair had added a flight change fee and the difference in fare to all flights booked before it introduced its zero-change policy. However, it should be noted that even though passengers had been able to try out the zero change fee airlines, they reported being charged too much.Ryanair has two pricing options, one for new customers and one for those who move flights via its website. This has not been explained. As far as I am aware, the question of whether this is legal is unanswered. Although it has upset many passengers, we know that this company seems to be less concerned about such matters than other companies.It is best to keep Ryanair flights in your mind as fixed and unchangeable. If the worst happens, it will almost always be cheaper to purchase new ones. Ryanair says that the change fee for summer flights will be waived if customers contact them.We are open to receiving letters, but we cannot respond individually. Email us at consumer.champions@theguardian.com or write to Consumer Champions, Money, the Guardian, 90 York Way, London N1 9GU. Include a phone number that is available during the day. All letters must be submitted and published in accordance with our terms and conditions