Unusual Gap with Big Volume Candle & Spread but broker pushes responsibility

My account was on a approximately 84% DD but all positions are in direct hedge with available margin level of more than 90%. On 21st June 2021, FBS did manipulation on CHFJPY and AUDUSD where CHFJPY had a very unusual gap down and big volume candle of 57 pips and AUDUSD, a major pair’s spread open close to 20 pips! Went on live chat to request for recover of positions but FBS Support kept only sending agreements over. Comparison done with other brokers but have no similar issue.