Month to month - contract or non contract

Good Day

After hearing about Rains month to month wifi, I contacted them to apply. With my application over the phone ( which they say they record) I specifically asked them that I do not want any contracts. They assured me that their is no contract, and stating that, if I don’t pay, there will be no data. With this information I continued my application and received my sim very promptly. I used it for about a year, until April 2023. During the last 3 months I have been receiving numerous messages to pay my account. I contacted them trying to explain the situation, but the only response I got is to make the payment. Now in the meanwhile this amount is just adding up and their is no costumer service email address. If I try to contact them, there is only a recording telling me to make a payment.

The fact that there is no one to talk to is very frustrating. Please advise.