PLEASE HELP

My name Is Maria i had the worst experience that i do not wish on my worst enemy I had problems with my ZTE cellphone with the battery only which i could not buy anywhere as no one has that kind of battery. i contacted blue label and they sad i must send the phone to them the courier company will collect it now I only had the phone for one year end December 2023 it took the courier more than a month to collect after numerous calls to blue label as to when they going to collect my phone was eventually collected on the 29/4/24 and i was told i will have the phone back between 7 to 14 days i have called blue label non stop about where my phone was and they always said they waiting for the qoute now they have the qoute and said i must pay over R500 ranf to get the phone back. my debit order goes off every month without fail i dont see if my phone is still on contract which im paying every month why i must be responsible for this when they took their time to have the phone collected and took their time to let me know they received the qoute now it is my responaibility the treatment they give you is totally unacceptable they think they are talking to children and have no tespect for the elderly im am 64 and they treat me like im nothing now my son said he will pay for the phone to come back to me but now they have lost and deferred my phone they not interested in anyone they just want money and expect me to pay till dec for something I don't have is this right treatment I'm very upset as all my personal details and bank and everything is on that phone please is there anyone that can assist me in this matter as i feel they are *****ing from me and it is ***** they are phoning and begging people to take a contract by them then the phone only last a year then you must send it back to them for checking or rpairs then they charge you so much which you dont have proof if it is correct and if you dont pay they take your phone away and still debit you from the 2nd year without having the phone SO UTTER DISCUSTING