Bad customer service and communication

1. In December 2019 I contacted customer service about irregularities of the heat pump charges I had on my rental statement of December, besides the automated reply I didn’t get any feedback. I paid my usual heat pump charges coz I during the billing period, the building did not have water and electricity for two weeks so the heat pump bill being 5x more than normal was very suspicious. 2. January 2019, the electricity of my apartment got switched off then I was told I was owing. I called the credit control person who then said he’ll follow up for feedback with customer service team and come back to mebut at the meantime he will note the issue and I should continue paying my normal heat pump rate. I then followed up February and he reiterated the same saying I must not call him, he will call me. 3. It’s now April, close to 5 months after initially contacting customer service, 3 months after having spoken to credit control team. No feedback, no response, no update not even communication. The outstanding amount is still reflecting and accumulating interest. I have been patient and my relationship with AFHCO never had issues until this incident.