Horrified at Hippo's ********** service

A Hippo consultant, Mr. Tennessee Nkosi, promised me a smooth transition from Selfmed to Discovery Health on March 27. He explicitly ensured me that he will cancel my membership with Selfmed and that there will be no double premiums paid in May. Well, he did not cancel my Selfmed membership. As a result, I have to stay with Selfmed until end of June. Mr. Nkosi passionately apologized for his negligence and promised that he would (a) get Discovery to refund me for May and (b) ensure that no premium is deducted by Discovery in June... Guess what? I have not been refunded for May and Discovery deducted a premium in June as well. Mr Nkosi has forwarded the contact details of his line manager, Ms Avery Nzama, to me. I have e-mailed her, but she has chosen to ignore my pleas for urgent assistance/intervention. I expect Hippo to accept responsibility for this mess and compensate me for losses incurred. If this mess is not resolved towards the end of this week, I am going to sue Hippo for their gross neglect and indifference.