You did get a warning. It was a big box in the middle of the screen but you most likely skipped it in a rush to play. This is how it works. You lag and players report you. Once these reports have built up to a certain point your account is flagged for investigation by Bungie staff. This investigation found that you were lagging and ruining matches for others so issued you a stand alone warning. You ignored this warning and continued playing ruining more matches and those players reported you. These built up again earning you a second investigation which caused Bungie to issue a second warning but this time added the 2 week pvp restriction. Sort out your Internet as next time Bungie has to step in the warning comes with a 2 month pvp restriction. Ps. There is more to your Internet than just up and down speeds. You also need to cover NAT, data loss rates, signal latency and jitter.