Poor service!!!

I've had biometric issues with my orders from MTN 3 times now.. although I keep mentioning to mtn that I'd prefer a manual delivery, I get told that the biometrics must fail first with the courier people then only I can phone then to set up the manual delivery.. when I call MTN I get put on hold & transferred to over 10 people who don't solve the issue.. only for the last person to say I need to go into a store... I then go into a store and get told they can't help me & I should call MTN... my issue was still not resolved & the call was cut on me obviously due to being close to knock off time... something so simple as to just changing a delivery method... get asked security questions by each person only to be transferred over & over then left on hold... this is absolutely ridiculous, time wasting & unprofessional.