Warranty Not Honoured

Late July we sent our Samsung tablet in for repairs to Vodacom Pietermaritzburg (Screen Faulty/Battery Problem) under warranty, and had to replace the battery at our own cost. On the 20th September 2015 we had to take the tablet back in for another battery replacement and Vodacom expect us to pay for another battery after just one month. An employee at Vodacom stated that the tablet battery has a guarantee of 6 months.