*********** sales agents

This company double invoiced me and when I call their call center number it never ever goes through, then finally I get a call back, only to be called by a very rude agent who scolded me for asking her the reason I am being charged. Worse when I try to explain to her that I did advise the initial sales person who assisted me that I had a previous sim card she decided and that I am worried it might be active and that I didn't know how to deactivate it, she proceeded to mute me and put me on hold for 45min... I mean what type of nonsense is that? Agents scolding customers for asking the reason from being charged double? I mean? Really? Offer me a solution do not scold me I am not your 2 year old unruled child.