CAN YOU PLEASE ACKNOWLEDGE MY PROOF OF PAYMENT AND CLOSE MY JET ACCOUNT!!!!!!

I paid a jet account off in 2020 to MBD collections and the account was never settled with the finance department, I have been trying for 2 solid years to get them to acknowledge proof of payment and continue to charge interest on the account and affect my credit rating. PLEASE CAN SOMEONE AT MBD SPEAK TO SOMEONE AT NIMBLE GROUP WITH A BRAIN CONTACT ME TO SETTLE THIS ACCOUNT **********! The staff cannot even give you their email addresses correctly and the accounts email is just as useless!