lack of information and forced to pay

i am highly pleased by the level of services i am getting from Edgars and Mtn as i took in my Samsung J5 to Edgars on the 11/04/16 was assisted by Kgotso the manager. kgotso never explained about any payments for the repairs of which i don't mind paying. the on the 29/04 i went back to Edgars to check on my phone and i was assisted by Sabelo who hen explained that i was supposed to have gotten an sms quotation from Mtn and i was to decline or reject the quote but i never got that till today 1/04/16. today i went to Edgars to get my phone and Sabelo called Mtn and now i am told to get my phone i will have to pay 330.00 of which i fell that its unfair for me to pay it as i never received the quote as per their t&cs 1a i didn't reject the quote as i never received been waiting since the 11/04/16 so why must i be liable for the 330.00 as no one is communicating with me i am the one who has to sent from pillar to post. i will not pay that 330.00 and i want my phone back.