Covid19 Wedding advice - please help!

Hi all, looking for some advice and help please! I was planning a destination wedding for France this summer (July). We were recommended a wedding planner by our photographer and signed the contract on March 2. Two weeks later, the covid19 pandemic took over and all the international travel bans came into effect. No work on the planning side had ever started. I tried to reach out to my planner several times throughout these few months, and each time it took over 2 weeks to get a response. Long story short, I asked for a refund on the deposit in May, due to the fact that the pandemic is still going on and that US citizens are NOT allowed to travel to France. I had to follow up multiple times to even get a response from them, their reason being that they are overwhelmed with postponements of all the 2020 weddings. They agreed that no work was ever started and are offering a partial refund of 55% (stating that they had to pay taxes of 45% on the deposit received, even though it is not revenue if no event is occurring?) I mentioned to them that I don’t believe I should be responsible for paying the taxes as no work was ever started, and to be quite honest, I could never get in contact with them. I feel upset due to the fact that I trusted them to be my planner, helping me throughout this most stressful and difficult time of having to postpone one of the most important days of my life, however, they never once reached out to me during the pandemic to ask how I was feeling, what I was thinking, if I had any backup options, etc. I personally had to negotiate a rescheduling / postponement schedule with my photographer and hair and makeup vendors, which I feel the planner should have helped with that. Furthermore, when I tried to reach out to them, I had to wait 2+ weeks to get a response, which makes me feel they prioritized other clients over me since they kept stating that they were busy with all the postponements. In addition, our wedding contract states that deposits are only refundable due to force majeure, which covid19 falls under, however, they are still refusing to provide a full refund. They state that there is a French law which states they can provide a credit good for 18 months, however, would you still want to use them again given that they havw not been responsive during some of the most stressful times of your life? Please advise on whether I am making too big of a deal on this or how I should respond from here? Thank you so much!!!