Unprofessional Service by MTN Tambotie Mall/Unjustified bank access MTNAccounts/Customer Services

Around the last week of September 2025, I went to MTN Tambotie Mall to downgrade my Shesh 600G as the area I moved to does not have fibre. I returned the related Free to use Shesh Router and was provided with a new smaller black one for a 100G LTE contract. The latter can only happen if you have returned the other router. The Deon character has been sitting comfortably when I have been making these followups from October as I have been billed for a router that was returned - his only response being I am following up - without copying me in his lleged following up. Today, MTN has billed me for something that I have comp**** with throwing my account into disarray whereas I have paid to them my monthly dues even though they haven't reconciled the balance due to me from the previous account - It's a mess and I have never been treated so unprofessionally and compromised by such a huge unaligned organisation. Aren't they supposed to ensure that their processes are on point before taking people's monies.... If there's legal recourse and room for compensation on this unjust matter, anyone, kindly assist