Pathetic Aftersales Service

I renewed my contracts at Vodacom at Mall @ Reds on 14th Feb 2019. I went back on 17th Feb as there was a defect on the screen on the one phone and the other one has a fault on the battery which drains. The technician took down my details on a s**** piece of paper. 2 weeks later, he still had made no contact. We went back on 3rd March and spoke to Renette who took the protective cover off the one phone and promised to provide feedback as to whether the phone is faulty as the battery drains quickly. The one phone has never been used thus far due to defect on screen and since Renette has the protective cover, I am afraid to scratch the screen. To date, no call has been received. I thought the initial service was brilliant, but aftersales service is pathetic. We are paying for contracts for phones that we can not use! 7 days period has passed and we are not getting anywhere with the sales person/technician at Vodacom. I would like new phones since we came to the store before the 7 days but due to your staff's pathetic service, nothing has been done.