Telkom contract phone deemed warranty with no explanation and refusing to return phone

Hi i need help and clarity. Im so dissapointed and feel that customer rights are neglected before i go for legal route believe i can this clarified. Bought cellphone on contract on Telkom network. The phone wasn't allowing to be charged when putting on charger. The phone was i bought in 26 March 2019 ibelieve this battery fault happened March 10 2020. I took phone aware that was told phone has 1 year warranty. At the Watercrest Telkom store they told me they will take my phone for repairs and it will take 3 weeks. I left shop after a day got message tgat the phone is booked for repairs. After like3 days got sms again saying i have to pay about R2000 for phone to be repaired because my warranty is deemed and they will contact me. Waited for call never received if i didi expect to have maybe sms again saying we tried contact you so contact us back. On all this sms there is no number mention to contact or any details. I phone telkom retail they say the repair centres communicate with customers so they do not know anything and they do not know where phone was taken. That shocked me. After a week got another sms saying i have to pay courier services for my phone since they did not repair it, still no contacts. I never book any courier service but hand in the store phone. Went to retailer they told me i have to pay for service told them im not i never book any courier and you never mention this to me because if i was told i could have make means to deliver my phone where im suppose to. I tried phoning 081 180 no help. What should i do because they told me i wont have phone till i pay. The next thing i was thinking to close their debit as for them to call me and have that attention.the phone is Samsum galaxy and Ref of this case TRJ111738