Ridiculous data consumptions

Good day,

I have a purchased a wifi rooter via supersonic,for the past 6 days my data has been ridiculously consumed without proper explanation. I have recharged with 25 GB from the 14th to the 17th July 2020 respectively.

I have been sending texts enquiring about the matter on their wats up number, my texts were blatantly ignored from the 17th in the morning and they chose to reply on the 19th with pathetic response.

I am being told that the high usage is as a result of Social Media and this does not make any sense as this is not my first month of using their service,

Upon realisation that the rooter's light was red, I've made a top up with 5 Gb on the 14th of July 2020 in the evening 15 July 2020; the data was again depleted and made a top up with 5 Gb around 13:35 16 July 2020: yet another data depleted, made a top up with 5 Gb and in less than it 5 hours it was depleted, the rooter was switched off for an hour. I then made yet another top up on even date with 5GB, upon switching on the rooter the light remained red even after rebooting the rooter. 17 July 2020: Made a top up with 5 GB and it still remained Red.

How does the rooter consumes 10 Gb of data if it has been switched off?

All I need from supersonic is for them to do a thorough analysis on their end and provide me with a proper explanation as to why the consumption is so high because the answers they're giving me are not satisfactory at all instead they are being based on speculations. I use the rooter for my work and now I am unable to fulfill my duties due to Supersonic incompetence.