Still waiting on this useless network!!!

A week ago, I made a complaint to the so called service manager at rain?! They were gonna send me proof of my billing statement of how much I used from their router and sim, even tough it was unplugged and canceled, They went on to deduct twice, which I have queried and they cannot give me a straight answer, I have emailed multiple times and they sent me a screenshot of a billing statement which can be just anyone's? I email them to no response, they said a week ago, on this platform they would correct it and investigate here I am still waiting