Very mad and angry customer

I had taken outa router in November 2023 pay 1100 per for a router and tge router stop workong return to mtn in gateway return to manager with sim card to sithembile mngomezulu her number was +***0 they was so call try sort it out the spoke berry her number was +***2 they was waiting approval from the area manager to give me the 4800 back up until now they have paid me back my money went back to stote tgese manager left they remembered me but they can find file apperently as it it archive please can hello peter sort this out my name ia Carmel Mckenzie my numbers *** and ***