worse service from lenovo south africa

i hated the day i took the Lenovo laptop from hi-fi cooperation. emmidiately i started using it i realised it was using more data than it should,, i called Lenovo and i was told that i have to take it back to the store where i bought it, without any problems i did that and at the store i was told they would book it out to Lenovo with all the paperwork done i was happy, when hi fi cooperation called me to come pick up the laptop , i found that the problem was not resolved and worse the gadget was not closed properly. two weeks after i had tried updtating the laptop i took it back to the shop where they told me Lenovo has got a rule that they can only do the exchange after 3 ruturns , again the laptop was booked out to Lenovo, it came back with more problems than before , still using a lot of data, mouse pad no longer working start screen not being as active as it should, sometimes not reading modem. i tried to communicate with Lenovo and i was sent from pillar to post, finaly i spoke to tracy whome i was told she deals with the problems clients are facing, and she asked that i give her the job number which im never given by the shop (hi-fi cooperation ) so i had to call the shop only to find they were closed due to the repairs they were doing at the shop . when i called back to give tracy the first job number i had at the first return of the gadget then i was told clients are not supposed to be transfered to tracy and no one can help me since i bought the laptop at hi-fi cooperation that makes me a third party, so they cant deal with me, i have to deal with hifi so they can take the laptop back to them..'' Im so unhappy about this whole situation since im using that laptop for business, i bought it to use it not to play up and downs with it within the shops, i spend my money investing on a company that cares less about its clients, currently i had to go back to hifi cooperation so they can book it out to Lenovo again, and since from the 3rd October i have not received any response since the and for the 3rd time now.