Bad service

Good day

kindly note i have been contacting the ackermans contact centre the whole morning ,trying to explain to to all agents that when they trying to put me on hold the phone keeps hanging up. the last agent Madre gave bad attitude and treate me like i am an illiterate , she also put me on hold and the line got cut . i asked to be contacted back and she mentioned it is impossible , so i asked what is going to happen as i need service?