Quick update to an earlier post. Tickets cancelled by BA in June 2020 were never refunded by Gotogate. Instead they kept me hanging with emails claiming they were waiting for BA to refund them first. In reality, I learnt from BA that they already refunded Gotogate in July.
Fortunately, I had booked via my credit card company, and they finally refunded the money owed to me now... 7.5 months after the original booking, and with still no satisfactory answer, let alone excuse from Gotogate. Never ever will book through them again.