Norman Bisset-Nashua Mobile

I was contacted by Normam Bisset consultants back in Dec 2017 and said i had an account with Nashua Mobile (Liquidated) and told me i had a balance of R572. Which i paid via EFT, i was told i will receive a Paid-up letter...Which i never received. In Oct 2020, they contacted me again and said i had a balance on the same account of R370 which i paid via Pay@ number. This time i was told i would receive a Paid-up letter...Which i never received. Now 2021, January they contacted me again and said i have a balance of R410 which i never paid. Few months later the balance is now R600+. I'm I paying for the sins of a LIQUIDATED COMPANY?