FAIL to respond regarding cancelation and refund request!

I made a booking in April on safarinow and due to lockdown we will now be unable to travel. I have sent a cancelation and refund request through in May as they instruct on the website and then followed up with at least 10 times since. We have had no response from safari and their phonelines are not active. This is shocking service as I have been a loyal customer over the years and always use them to do my holiday bookings. I would like to get feedback from them ASAP!