No Customer Service But Quick to Ask for Money

So on the 28th of April my husband contacted Level-7 telling them that we are locating. On the 1st of May 2023 I signed the new contract. Received an email that installation will be within 3 weeks. On the 7th of May I received an Invoice for my monthly payment and i contacted them asking why must I pay an installment if I am currently without WIFI as I am still waiting for the new installation, which she replayed saying that I still have to make a payment they will just credit my account (which i can understand) but I did not make a payment as my husband and I said once installation takes place we will make a prorated payment. On the 4th of May my husband phoned them and said that we noticed that the previous tenants did not leave the black box so they must install a new one. On the 23 of May my husband followed up on the installation and the response was they are struggling to get hold of the previous tenants as they did not cancel there WIFI, with replay to them that they disappeared over night 3 months ago and the house was empty for 2 months so how is it possible that the line is still active? So they replayed and said they will get it sorted and within a week the team will come and do installation. on the 30th of May we phoned again to follow up and still the same excuse. on the 5th of June we phoned again and asked to speak to a manager as the replay was there is no manager available we should phone back the next day. We phoned again and asked for a manager and the consultant on the phoned asked that we must hold. 2min later the same consultant gets back on the line and said that the manager said that he will have a look at the problem and get back to us. The same day I received a call from them and said within 72hours they will come and do a new installation. On the 10th we phoned again and followed up again as we have not received any phone call asking will someone be at the premises or even an email regarding installation, the replay we received was there are no teams working on the weekends to do installation. Today is the 12th of June and its almost 12H00 and still no feedback from them what so ever. Only mails that was received in meantime is my invoice that needs to be paid for May. They are quick to ask for money for something that is not even installed. Not even speaking about the service we are receiving at work as they are the same provider that we use at work. In February we asked for fibre as we are still using the dish we signed the contract and made the payment and they still have not come to do the changes here as well.