In the case of multiple bookings, we try to bundle them as best possible and to issue invoices at intervals of several days. However, monthly collective invoices are not possible because teliad cannot delay its obligation to pay the sellers for too long.
We do offer the possibility of advance payment. Advance payments are invoice credits, which you can generate within your customer account. Future invoices can be paid for immediately, using these credits. This enables us to bundle extension invoices a lot better.