NEVER TAKE AN MTN CONTRACT, its a death sengence,they will never let you go

Never take a an MTN contract people,l had a contract with this people and it ended by January 2023,l tried to call to cancel since it was a three year contract and it had to atoumatically end but they said l was late to give notice and l should call month end of January and l did call to cancel and they confirm that on 28 February it will automatically end because i cancelled it in time,now this stupid people are back to say l never gave a notice,what a shame,WHAT A DISSAPOINTMENT of a nertwork provider sis,theh want me to stay in this contract forever sis