Incompetence and unfair

In February i took my tablet to carnival mall to see if my warranty would sort the damages, otherwise i was willing to get a quote for repairs and probably pay. 1st i was told that because there is no spares for the M10 Lenovo i would get a new 1 by the technician (i struggled to believe this but thought i would give it a shot) After weeks of no communication back from the branch after giving them this tablet, I decided to take this face to face and went to vodacom only to be told there is no repairs they can do due to NO spares and they will not replace the tablet either and they cannot do anything about it NOTE: THIS IS ON A CONTRACT. So i contacted head office, they responded that i should contact repairs escalation after a further few weeks of emails i got told to send the tablet to head office to a head of repairs it took another 2 weeks for them to email me to say first "they could not find my tablet." They eventually find it another week later and then a further 2 weeks go past with no communication i eventually get a message stating that i must now pay almost over half the value of the tablet. So after months of no answers no real help i still have to pay for a contract that i cant even use due to your *********** staff and false promises i am now left paying for a contract i couldnt even use and now im put with a repair bill i HAD money for and now today they finally sent it and i have 48 hours to put R1700 together and respond. Out of all thiS the contract is nearly 7 months old and due to incompetence i have used it for 1 of those months but paid everyy month of it without fault!!!!