Contract cancelation

I app**** for a contract online but was told the device i wanted was out of stock then was offered a phone which i dont know a Y7 it was delivered on the 29thAug and was told I had a grace period of 7 days to exchange the phone or cancel the contract. Went to Cresta branch on saturday was told to call Sales line which i did on monday but never got assistance. I then spoke to Asanda Gugu Mazantsi Senior Associate Ops who sent an email to <***>; Mobile Retention Escalations (MRE) <***>; Raymond Siribhajan (R) <***>; Keegan Haynes (K) <***>... >But till today I havent received any feedback and tomorrow it the last day for me to exchange or cancel the contract. They even debited my account before delivery of the device but now i cant cancel the contract and i wont be liable for any fees that may accure. the below is the email Asanda sent.

Good day Team

Miss Nosipho Dlamini ordered a cellphone - Y7 online and she received it- would like to change the cellphone and take another . She has been sent from sales to 180- 081180 and billing - No one could assist on the change order. Can any one please allocate this to relevent department.,

Or cancel the order - she received the phone on the 29 August 2019. Tried to return to the store- they could not asisst. Please assist and contact the customer - ***/ ***

Telkom is quick on debiting and calling back for sales but after they got what they wanted they cant assist their clients... as a new client I'm highly disappointed