Free Fire Max — I have paid for special airdrop twice and requested refund and after sometime I got it but now they restricted my account

Website: ff.garena.com

I have paid for a special air drop of 95Rs by mistake and paid twice and requested refund and after sometime I got it but now they restricted my account and they want to i purchase some diamonds and then they will deduct it from my account. The refund what I got was right and fair and I have proofs too please help me and help me to get my account too and I am very unsatisfied of the purchases of free fire I paid upto 18000 in 3 years and I am still unsatisfied of it