Faulty data wifi router

In short.I received a data bill of R22292.After investigation from Vodacom it was confirmed that the data was used.I received a email showing which websites were visited.All Chinese websites.I confronted my neighbor whom I suspected.He confirmed and admitted that he used the data but stated that the router was OPEN,no password required.I opened a case of ***** at the SAPS,,needless to say I haven't heard from them.<br> vodacom reduced the bill to help me to around R10000.The data department assured me I can make arrangements on paying it .when I tried to make arrangements I was told I can only make two payments after which I told them I CANNOT PAY THAT.I am not responsible for the data usage,but am willing to pay it off.I was threatened that my lines will be cut and the account would be handed over to the legal department.<br> I have 5 lines with vodacom,have been a loyal customer for the last 12 years.All 5 my lines have been cut twice in the last 30 days after which I must beg to get it reconnected.I am threatened every time to pay the outstanding amount immediately.My phone was ****** this week and I tried to open a new contract just to get another phone.Nobody want to help me.