Bad customer Service at APM bus services

i would not recommend the APM bus to any one, i tried calling them on the 25/05/2019 at around 12:00 to move the bus ticket to another date , i daille there numbers which are 012 ********** , but no answer, i called on Sunday no answer Monday no, answer and Tuesday , on the 29/05/2019 someone answers the phone and by the name of Ntsako Mashamba (Team Leader) and she informed me that this an inbound call center an your call won't be answered at all times and now they cannot asist me with the bus ticket , yet i am aware of their T's and C's that is why i called before i the bus arrived and i was fully aware that i need to pay a fee, but no answered so today she tells me that they can't assist me i should refer to the T's & C's which i read before i called, they need to improve their call centre i mean even if their are high call volumes at some point your call should be answered so how do they managed call queue by just ignoring the call queue instead of having a system that informs you that you are number one in the queue, they turned from good service to bad service. do not take this bus