Threatening me after my first review

Took my Mac book there because it wasn't charging. I gave them both my original and generic charges. When i went to collect my goods after a month, they had repaired the charger which wasn't the problem. Mac book was written off due to water damage anyways. I had to pay them for a letter to give my insurance company. They still wanted me to pay R450 for the cable repair. Not to mention they still have my generic charger. Rather stay away from this company as they dont know how to treat customers. Threatening me after my review on google.