You accept that you may not always get through to all international destinations or other non-standard call types, and that we may also require you to pay a deposit or impose a Credit Limit before we allow you to use International Access or other non-standard numbers. Even if we have imposed a Credit Limit, you will be responsible for any call charges you incur in excess of that limit because of delays in our billing system. If you have a bar for certain numbers, whether requested or not you accept that this bar is not guaranteed and you are still responsible for the charges incurred if these calls are made.