Payment not escalated

Really not happy with this company called mix telematics been calling them since February regard payment I made and sending emails in which I’m not getting assistance with and it’s really frustrating cz this is making my itc bad as if payment were not made,sent proof of payment till today nothing had been done,phone rings one ways ,if you lucky enough to get a consultant they keep saying this has been done escalated.dont wish or advice anyone to sign up for this