I ask some staff but i got no response why this is happen?
someone is spamming on my account

Also, you didn’t know because you’re new, but you aren’t allowed to publicly accuse members. If someone is breaking the rules, remember BRDI:
Block them (this is especially strong if they are harassing you)
Report them (this is how offenders are banned, not public forums)
Dm a mod (don’t do this for every single small thing, but if something is a big issue, a dm might be necessary)
Ignore them (don’t engage. Don’t talk back. Pretend they don’t exist)

[removed -- MS] this id is spamming on my account she challenge me and she start spamming and when she is losing game then she spam in my chat and she said i ban your acc ....but why diamond members can ban anyones account and I'm very new to this appi bored of playing offline tournament so i took premium of learning and this happen
Disable chat and block the member.

[removed -- MS] this id is spamming on my account she challenge me and she start spamming and when she is losing game then she spam in my chat and she said i ban your acc ....but why diamond members can ban anyones account and I'm very new to this appi bored of playing offline tournament so i took premium of learning and this happen
If you are very aware that the person is going to hack into your account, then advise you to change your password
[removed -- MS] this id is spamming on my account she challenge me and she start spamming and when she is losing game then she spam in my chat and she said i ban your acc ....but why diamond members can ban anyones account and I'm very new to this appi bored of playing offline tournament so i took premium of learning and this happen