telegram invite

Does anyone know how to exceed the limit of 5, adding non-mutual contacts to group in Telegram? Some accounts can add 35 to groups per day, but some have the limit of only 5, and I have no idea how to exceed this limit of 5.

I have a channel and need someone to mass invite people from other channels. The maximum users I might want to invite is around 50K, but I understand that might take a long time and we can deal with smaller amounts at first. Really need to find someone who can do this, please don't hesitate to PM.