OVH VPS bandwidth monthly limit is 10TB. According to their TOS, they may limit your network connection if your bandwidth usage exceed this limit. But VPS only have 100Mbps connection, so even if you VPS download/upload all the time during a month, I'm not even sure you will be able to exceed the limit.
Contact to your service provider they know everything about how much bandwidth has allocated to your VPS server. They have full access to all the resources which you provided. If they are not answering you then drop an e-mail regarding your query still not responding change your service provider.
