Africa Mobile Services Are The Worst. Very ***********!!!

I've been on a cellphone contract with this company since March 2023 of which their debit orders had been paid yet I had only received the device after April 2023 debit went off. This company has not issued me with a formal contract of agreement since the and countless time I have been requesting for this information. No benefits have been allocated since I have received the device and in November 2023 I started to experience network connectivity problems on the simcard they provided, bare in mind I had ported my personal number which I receive all my important notifications and calls from. They sent me a Whatsapp message stating/threatening they would lock my phone for non payment by a stipulated date and want me to make arrangements. They claim operating hours are 9am to 5pm Monday- Friday and provide a Whatsapp number *** and landline number *** which are not being answered, neither any response given back. When you text the Whatsapp number they reply saying " the ticket has been resolved" not having requested for my issues. Furthermore since 20th March 2024 they only responded me at 16:52 requesting for my issue and did not reply back to me knowing that from 17:00 they have an auto response about after operational hours. What does it take to receive assistance from this company? This is no way to be treating a paying customer with issues. Their services are the worst services ever.