Edgars cell

I purchased a cell phone from Edgars at Mall of the south,the phone is in my possession for 6 days... The phone keeps shutting down apps etc. When I do the requested updates it erases all my information from Facebook and Whatsapp. I have been trying to call the store on the number on the receipt since yesterday and it doesn't gat answered. I called Edgars customer care,who informed me that I should take the phone back to the store(This is an additional cost to me,as I don't have a car,so make use of Uber) They will then send the phone in for an assessment,this will leave me without a phone for as long as it takes for the assessment. I will then have to return to the store (again at considerable cost to me)and find out what they say .I find this to be very poor service with no regard for the customer....