help me wifi plzzzzzzz

[eido]

dost mai ne dsl lagaya ha Dukan to mera password bar bar hack karta ha koi yani jo admi mera password hack krta ha os ne mera ip Adress maloom Kia ha jub wo hack krta ha to wo mera ip adrrss google mai search krta example.198.1.233 pir direct login ata ha ab os ne mera login ka b user name or password dond lia jub wo login karta to os ko mera password client wagera sub kuch show hot a ha ab mera ye sawal ha agar mai login ka user name or password change kru pir to hack nai ho sakta na

[idanish]

sab se phele apna username or password change karo
uske baad apni ssid change karo wo PTCL_BB like kuch hogi uska name change karo.
uske baad apne connection ko limited karo phir apne connection ko static IP pe set karo.
uske baad dekho ke agar koi or unknown device wifi use karti hoi dekhe to uski ip block kardo or mac address record kar ke dekho agar phir khabhi aye to mac address block kardo.