I cant see the issue with the account being played from different IP addresses, I get that it can be an issue with multiple IPs from the same address but what about people who play in different locations? From home, work or a friends house.
I play alot on my phone using 4G from all around my region as probably to alot of people. Again, can’t see this being the problem.
If theyve gone to the provider to investigate your consistent big wins then the only thing I can think of is that they (VS) think theres a flaw in the game of sorts and the way you play the game has fucked witwith the algorithms of it. Even then though this is their issue not yours.
Hope you get it sorted bud, it really is a slap in the face though, you should definately be on their VIP lists and for the chat support to treat you like that is outrageous.