Ifounyam cellphone contract

My name is Jacob and have an ongoing calls from pep, Ackerman's,dunn of certain Nhlanhla regarding phone yam he took from one of above stores using my name.I tried to clarify my name to callers but can't stop calling me.I recieved SMS on 29 May 2025 at 20h18 to pay R137.94 on 5 June 2025 with ***. I went to Pep to enquire about it and was advised to go to cell c for clarity but proved no link to phone issues that is now causing unnecessary stress .*** please stop this