I was told that my contract has expired some months ago

I was told that my contract has expired some months ago. I wasn't made aware or received any notification until I get a call from a salesperson advertising the new product when he mentioned that my contract has expired and I'm now on month to month contract but they'll send me an email of which that never happened. They rude consultants on their whatsapp line they're very unprofessional, they won't even greet let alone introduce themselves. Very rude to the core, ignore queries on some days unless if you miss a payment they'll send irritating whatsapp messages. The worse thing, debit your account when ever they feel like. I'm convinced Cartract employed a bunch of useless human services with no communication skills.