ADMYNTEC's Endless Loop: Withholding My Refund Through Repetitive Requests

This company owes me a refund of insurance premiums from April 2024 till 2025 January for a device that was cancelled last year April inSfore, they asked me to send a proof that i have cancelled a device April last year ,i requested that proof from mtn an eamil was sent stating the date and reference number of the day of cancellation of a device. I am receiving dozens of email for the samething i sent to them ,bad service they are delay the orocess to avoid paying back my refund .