Non existent customer service

I app**** online, twice, for a contract, providing specifics of when and what time I can be called, on both occasions call centre agents called on their own times and then they send you an email that they failed to contacts you, and your application will be cancelled. I responded to both agents, Mabel and Queen, re-iterating I cannot be called at any time, Mable did not respond, Queen responded, I am still waiting for her to call me. Your Facebook service is even worse, I waited two days for a response, provided details and twos days after the fact, still nothing. Calling you is a waste of time and money as all your agents are always busy, holding time is always in access of 5 minutes and you never reach an agent. I have now exhausted all avenues and this is the last resort