I got temp suspension for supposed game modification.

I swear to god i do not use cheats. i dont know what i did for my account to get suspended. at 9:25pm, the time it told me i would be able to use my account, i loaded into a team deathmatch. i got suspended AGAIN for the same damn reason. my friend even got the cheater detected screen. im reinstalling my val. hopefully it will be fine after this. does anyone know the cause?