Telkom Mobile Woes - Inadequate Device and Service

At 5.40 after hours of being bounced around from one consultant to another, I get an automated message on the customer line saying I am outside operating hours (after which the voice says hours are until 8pm...)

The contract I was sold for R150 a month includes 20gb of data which I was told would be covered in my area. I have been bounced off the network all day. The phone that came with the contract (Huawei Y5) crashes on most apps - Facebook, Instagram, any games I try download. Only 16gig space on the hard drive. Camera not up to scratch. Want to migrate to a better deal, within my 7 day cooldown but cannot get through to anyone who can assist me in this regard. Try to cancel on website and cannot complete the function. Would appreciate urgent response from management tomorrow as it is my last day of cooldown and I am not willing to pay for what I have received with this deal. Not what was advertised and I feel like Telkom was the wrong way to go at this stage...