Terrible service received. Dissatisfied customer

Terrible service. I recently purchased a property, there are 5 prepaid meters, 3 registered to citiq and 2 to another company. upon trying to register the 2 onto citiq, i am making repeat calls through to their call centre and being promised a call back from sales who either dont care or are on holiday because it is now 2 days later and i am still not assisted. i sent repeat mails and messaged their whatsapp line and no help. just empty promises and automated responses. Is someone able to assist me or have I made a mistake to deal with this company?