Terrible service from foneyam

So my husband and i both have contracts with foneyam, we got out 3 day warning before our devices locked and we decided to make both payments for our devices (this was the 4th of May) 3 days past and we woke up to both our devices locked, called them and asked whats going on and they said they didn't receive payment on the devices and i should send proof of payments, so I did send it on the on the 6th of May, no today is the 9th of May and we haven't heard anything back but hey they keep on calling us asking us to make a payment. They also saying that one of our devices sim card is not linked to the device but the moment i remove the sim it say "per agreement sim card should be in device" or something like that, so basically I've been without a devices for a few days now and they just don't care about finding the payment and unblocking the devices