Teledialacom Con

We received an account, which we were not aware that we had to pay, as we were not aware of any contract, nor did we have any contract. We paid the amount in good faith, and stated that the contract was now cancelled (the lawyers doing the collection) now 15 months later we receive from another lawyer that we owe them R14181.30. FOR WHAT? We have never received a monthly invoice or statement, and as far as we are concerned we do not have a contract. I will be reporting them to the Consumer protection office if there is such a place.