MTN Data carrier billing on Google play store is useless

MTN is the worst, firstly the contract installment amount on mtn contract is forever getting higher and higher, Secondly I have been calling MTN customer care about an issue that I have paying via Data Carrier billing on the Google play store, the lady I spoke to transferred me to the technical department that has nothing to do with billing then I had to call them back again to explain that the Google team has assessed my account and the issue is with MTN. Then they sent me to the MTN store because they couldn't assist me via the call center. I drive miles away only ro find out the the call center is supposed ro be able ro assist with DCB and spend limits. Here I am still without a solution, after wasting time money and much expensive petrol but come time for me to pay my contract, they send me high bills for spend limits that I can't even use on Google play store. They can have their phone back. Useless network. I'm very angry. Google even sent an email to prove to them that I have Goodstanding with them and the problem is with MTN....still no solution with MTN DCB...